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Wells Catalog (New Design) Flipbook PDF
Wells Catalog (New Design)
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THE WELLS LEGACY Greenfield, Massachusetts, founded in 1763, with 365 residents, grew quickly due to its strategic location at the junction of the Deerfield and Connecticut rivers. Northampton resident John J. Grant moved to Greenfield with plans for a new die that would make a better screw. This die was patented in 1871 as the “two pieced die”. Prior to the creation of this invention, nuts and bolts were crushed into shape with little chance of a perfect fit. The new two pieced die cut the metal rather than compressing it to shape in the old manner. Grant’s two pieced die removed all imperfections and guaranteed a perfect fit every time. In 1874, the Wells brothers, Fredrick E. and Frank O., left the Wiley & Russell tap & die company. In a small building along the Green River in Greenfield, MA, they, along with their father, Elias, started Wells Brothers, a tap and die manufacturing business. Because of a fire, the Wells brothers were forced to relocate to the B. B. Noyes Foundry on Hope Street while they rebuilt their company. Here, the first adjustable die was invented. Their new building was their home for the next ten years. In 1900 the elder brother, Fredrick, split from his brother and began manufacturing pipe tools. By 1910 he and his son, Fred W. Wells, combined forces with the E.F. Reece company and prospered until 1922 when the company was absorbed by his brother’s company, Greenfield Tap & Die. In 1928, Fredrick founded the Wells Tool Company in the same B. B. Noyes building he resided in during 1889. Although his company was small, it survived because its foundations were laid by the man who virtually founded the tap & die industry. He emphasized the necessity of high quality and customer satisfaction. The company gained fame by being able to provide its customers with a variety of quality standard and specialty items. In 1946, Mr. Harold A. Gardner and Mr. Joseph Ballard acquired Wells Tool. Both men were former employees of the company and were well acquainted with how to make a quality tap based on the foundations of its previous owner. They also brought fresh and innovative ideas. The first of these ideas was to include alternative “H” limits not found in other catalogs at the time. In 1977, Robert Malloy, a former salesperson for the Bendix Tap Co., took over as Owner and President. It was his belief to give his customers top quality taps at the absolute lowest prices. Despite the fact that some consumers believed the lowest prices equated with the lowest quality, they quickly discovered that with Wells taps, this was not true. Constantly on the road, he peddled his taps and greatly broadened the Wells Tool customer base. Unfortunately, in 1994, he fell ill and passed away shortly after. Left to his family, Wells continued for almost five more years. However, during those years, the company slowly began to decline. In the fall of 1999, after almost 72 years of making taps, the company closed its doors. It seemed that the legacy known as the Wells Tool Company had ended. On January 2, 2000, my father, Philip Duda, reopened the doors of the all-new Wells Tool Company. Having been in the cutting tool industry his entire life with my grandfather John, it was important for him to keep the company alive and to continue the 130-year heritage. From the history above, you can see that Greenfield, Massachusetts was the center for the tap and die industry in America for well over 100 years. His vision was keep the tap industry going strong In Greenfield. In keeping his vision alive, my father has passed the torch to me to carry on the legacy of Wells Tool. I am proud to provide you with our brand new catalog and website. If what you are looking for is not within these pages, please call (413) 773-3465 or visit us www.wellstool.com.
Cort Duda President Wells Tool Company Inc.
TABLE OF CONTENTS Call for: Hand Taps Machine Screw Sizes . . . . . . . . . . . . .2-3 Fractional Sizes . . . . . . . . . . . . . . . . . 4-5 - Spiral Point Hand Taps - HSS Round Adjustable Dies Machine Screw Sizes Special Sizes Machine Screw Fractional Sizes Hand Taps (Hi-Carbon Steel) Special Sizes Fractional Machine Screw & Fractional . . . . . .6-7 - Metric Hand Taps Metric Sizes Spiral Point - Left Hand HSS Round Dies Pipe Taps & Reamers . . . . . . . . . . . . . . 8 - STI Taps - Eight Pitch Hex & Round Dies Machine Screw Sizes - LH C.S Hex Rethreading Dies Fractional Sizes HSS Round Adjustable Dies Spiral Point Machine Screw & Fractional . . . . . . 9 Metric Standard Sizes . . . . . . . . . . . . . . . . . . 9 - Hand Taps Large Diameter HSS & C.S Hexagon Dies . . . . . . . . . . 10 Nut Taps Fractional Sizes Tap & Die Holders . . . . . . . . . . . . . . . . 11 - Pulley Taps Spiral Point Tap Nomenclature . . . . . . . . . . . . . . . . 12 - Tandem, Spark, & Piper Taps - Piper Taps & Reamers Troubleshooting . . . . . . . . . . . . . . . . . .13 - Thread Forming Taps - Combined Taps & Drills Tap Drill Sizes . . . . . . . . . . . . . . . . . . . .14 - Coated Taps - Special Hand Taps - Taper Pin Reamers Thread Series Designations . . . . . . . . 15 - Screw Extractors Word & Term Definitions . . . . . . . . . 16-17 - Hand Tap Extensions - Inserts Tap Sharpening & Faults . . . . . . . . . . 18 Decimal Chart . . . . . . . . . . . . . . . . . . . 19
1
HAND TAPS GROUND THREAD HSS
MACHINE SCREW SIZES TAPER PLUG BOTTOM
Nominal Size 0-80 UNC 0-80 UNC 1-64 UNC 1-64 UNC 1-72 UNF 1-72 UNF 2-56 UNC 2-56 UNC 2-64 UNF 3-48 UNC 3-56 UNF 4-40 UNC 4-40 UNC 4-40 UNC 4-40 UNC 4-48 UNF 4-48 UNF 4-36 NS 5-40 UNC 5-40 UNC 5-40 UNC 5-44 UNF 6-32 UNC 6-32 UNC 6-32 UNC 6-32 UNC 6-32 UNC 6-32 UNC 6-32 UNC 6-40 UNF 6-40 UNF 6-40 UNF
2
H Limits 1 2 1 2 1 2 1 2 2 2 2 1 2 1 2 1 2 2 1 2 2 2 1 1 2 2 3 3 7 1 2 2
# of Flutes 2 2 2 2 2 2 3 3 3 3 3 2 2 3 3 3 3 3 3 2 3 3 2 3 2 3 2 3 3 3 2 3
Thread Length 5/16 5/16 3/8 3/8 3/8 3/8 7/16 7/16 7/16 1/2 1/2 9/16 9/16 9/16 9/16 9/16 9/16 9/16 5/8 5/8 5/8 5/8 11/16 11/16 11/16 11/16 11/16 11/16 11/16 11/16 11/16 11/16
Overall Length 1 5/8 1 5/8 1 11/16 1 11/16 1 11/16 1 11/16 1 3/4 1 3/4 1 3/4 1 13/16 1 13/16 1 7/8 1 7/8 1 7/8 1 7/8 1 7/8 1 7/8 1 7/8 1 15/16 1 15/16 1 15/16 1 15/16 2 2 2 2 2 2 2 2 2 2
Taper Part No. 30650-11 30650-12 30651-11 30651-12 30672-11 30672-12 30652-11 30652-12 30653-12 30654-12 30655-12 30656-11 30656-12 30601-11 30601-12 30602-11 30602-12 30600-12 30603-11 30657-12 30603-12 30604-12 30658-11 30605-11 30658-12 30605-12 30658-13 30605-13 30605-17 30606-11 30659-12 30606-12
Plug Part No. 30650-21 30650-22 30651-21 30651-22 30672-21 30672-22 30652-21 30652-22 30653-22 30654-22 30655-22 30656-21 30656-22 30601-21 30601-22 30602-21 30602-22 30600-22 30603-21 30657-22 30603-22 30604-22 30658-21 30605-21 30658-22 30605-22 30658-23 30605-23 30605-27 30606-21 30659-22 30606-22
Bottom Part No. 30650-31 30650-32 30651-31 30651-32 30672-31 30672-32 30652-31 30652-32 30653-32 30654-32 30655-32 30656-31 30656-32 30601-31 30601-32 30602-31 30602-32 30600-32 30603-31 30657-32 30606-32 30604-32 30658-31 30605-31 30658-32 30605-32 30658-33 30605-33 30605-37 30606-31 30659-32 30606-32
Set Part No. 30650-41 30650-42 30651-41 30651-42 30671-41 30672-42 30652-41 30652-42 30653-42 30654-42 30655-42 30656-41 30656-42 30601-41 30601-42 30602-41 30602-41 30600-42 30603-41 30657-42 30603-42 30604-42 30658-41 30605-41 30658-42 30605-42 30658-43 30605-43 30605-47 30606-41 30659-42 30606-42
HAND TAPS GROUND THREAD HSS
MACHINE SCREW SIZES
Nominal Size 8-32 UNC 8-32 UNC 8-32 UNC 8-32 UNC 8-32 UNC 8-32 UNC 8-32 UNC 8-32 UNC 8-36 UNF 8-36 UNF 10-24 UNC 10-24 UNC 10-24 UNC 10-24 UNC 10-24 UNC 10-24 UNC 10-24 UNC 10-24 UNC 10-32 UNF 10-32 UNF 10-32 UNF 10-32 UNF 10-32 UNF 10-32 UNF 10-32 UNF 10-32 UNF 10-32 UNF 12-24 UNC 12-24 UNC 12-28 UNF 12-28 UNF
H Limits 1 2 2 2 3 3 3 7 1 2 1 2 2 2 3 3 3 7 1 1 2 2 2 3 3 3 7 1 3 1 3
# of Flutes 4 2 3 4 2 3 4 4 4 4 4 2 3 4 2 3 4 4 2 4 2 3 4 2 3 4 4 4 4 4 4
Thread Length 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 15/16 15/16 15/16 15/16
Overall Length 2 1/8 2 1/8 2 1/8 2 1/8 2 1/8 2 1/8 2 1/8 2 1/8 2 1/8 2 1/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8
Taper Part No. 30607-11 30660-12 30661-12 30607-12 30660-13 30661-13 30607-13 30607-17 30608-11 30608-12 30609-11 30662-12 30663-12 30609-12 30662-13 30663-13 30609-13 30609-17 30664-11 30610-11 30664-12 30665-12 30610-12 30664-13 30665-13 30610-13 30610-17 30611-11 30611-13 30612-11 30612-13
Plug Part No. 30607-21 30660-22 30661-22 30607-22 30660-23 30660-23 30607-23 30607-27 30608-21 30608-22 30609-21 30662-22 30663-22 30609-22 30662-23 30663-23 30609-23 30609-27 30664-21 30610-21 30664-22 30665-22 30610-22 30664-23 30665-23 30610-23 30610-27 30611-21 30611-23 30612-21 30612-23
Bottom Part No.
Set Part No.
30607-31 30660-32 30661-32 30607-32 30660-33 30661-33 30607-33 30607-37 30608-31 30608-32 30609-31 30662-32 30663-32 30609-32 30662-33 30663-33 30609-33 30609-37 30664-31 30610-31 30664-32 30665-32 30610-32 30664-33 30665-33 30610-33 30610-37 30611-31 30611-33 30611-31 30612-33
30607-41 30660-42 30661-42 30607-42 30660-43 30661-43 30607-43 30607-47 30608-48 30608-42 30609-41 30662-42 30663-42 30609-42 30662-42 30663-42 30609-43 30609-47 30664-41 30610-41 30664-42 30665-42 30610-42 30664-43 30665-43 30610-43 30610-47 30611-41 30611-43 30612-41 30612-43
3
HAND TAPS GROUND THREAD HSS
FRACTIONAL SIZES Nominal Size 1/4-20 UNC 1/4-20 UNC 1/4-20 UNC 1/4-20 UNC 1/4-20 UNC 1/4-20 UNC 1/4-20 UNC 1/4-20 UNC 1/4-20 UNC 1/4-28 UNF 1/4-28 UNF 1/4-28 UNF 1/4-28 UNF 1/4-28 UNF 1/4-28 UNF 5/16-18 UNC 5/16-18 UNC 5/16-18 UNC 5/16-18 UNC 5/16-18 UNC 5/16-18 UNC 5/16-24 UNF 5/16-24 UNF 5/16-24 UNF 5/16-24 UNF 5/16-24 UNF 5/16-24 UNF 3/8-16 UNC 3/8-16 UNC 3/8-16 UNC 3/8-16 UNC 3/8-16 UNC 3/8-24 UNF 3/8-24 UNF 3/8-24 UNF 3/8-24 UNF 3/8-24 UNF 7/16-14 UNC 7/16-14 UNC 7/16-14 UNC 7/16-20 UNF 7/16-20 UNF 7/16-20 UNF 1/2-13 UNC 1/2-13 UNC 1/2-13 UNC 1/2-13 UNC 1/2-20 UNF 1/2-20 UNF 1/2-20 UNF
4
H Limits 1 1 2 2 3 1 3 5 5 1 2 3 3 3 4 1 2 3 3 3 5 1 2 3 3 4 4 1 2 3 3 5 1 2 3 3 4 3 3 5 3 3 5 1 3 3 5 1 3 3
# of Flutes 3 4 3 4 2 3 4 3 4 4 4 2 3 4 4 4 4 2 3 4 4 4 4 3 4 3 4 4 4 3 4 4 4 4 3 4 4 3 4 4 3 4 4 4 3 4 4 4 3 4
Thread Length 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1/8 1 1/8 1 1/8 1 1/8 1 1/8 1 1/8 1 1/8 1 1/8 1 1/8 1 1/8 1 1/8 1 1/8 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 7/16 1 7/16 1 7/16 1 7/16 1 7/16 1 7/16 1 21/32 1 21/32 1 21/32 1 21/32 1 21/32 1 21/32 1 21/32
Overall Length 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 23/32 2 23/32 2 23/32 2 23/32 2 23/32 2 23/32 2 23/32 2 23/32 2 23/32 2 23/32 2 23/32 2 23/32 2 15/16 2 15/16 2 15/16 2 15/16 2 15/16 2 15/16 2 15/16 2 15/16 2 15/16 2 15/16 3 5/32 3 5/32 3 5/32 3 5/32 3 5/32 3 5/32 3 3/8 3 3/8 3 3/8 3 3/8 3 3/8 3 3/8 3 3/8
Taper Part No. 30666-11 30613-11 30666-12 30613-12 30667-13 30666-13 30613-13 30666-15 30613-15 30614-11 30614-12 30688-13 30668-13 30614-13 30614-14 30615-11 30615-12 30669-13 30670-13 30615-13 30615-15 30616-11 30616-12 30671-13 30616-13 30671-14 30616-14 30617-11 30617-12 30673-13 30617-13 30617-15 30618-11 30618-12 30674-13 30618-13 30618-14 30675-13 30619-13 30619-15 30676-13 30620-13 30620-15 30621-11 30677-13 30621-13 30621-15 30622-11 30678-13 30622-13
Plug Part No.
30666-21 30613-21 30666-22 30613-22 30667-23 30666-23 30613-23 30666-25 30613-25 30614-21 30614-22 30688-23 30668-23 30614-23 30614-24 30615-21 30615-22 30669-23 30670-23 30615-23 30615-25 30616-21 30616-22 30671-23 30616-23 30671-24 30616-24 30617-21 30617-22 30673-23 30617-23 30617-25 30618-21 30618-22 30674-23 30618-23 30618-24 30675-23 30619-23 30619-25 30675-23 30620-23 30620-25 30621-21 30677-23 30621-23 30621-25 30622-21 30678-23 30622-23
Bottom Part No.
Set Part No.
30666-31 30613-31 30666-32 30613-32 30667-33 30666-33 30613-33 30666-35 30613-35 30614-31 30614-32 30688-33 30668-33 30614-33 30614-34 30615-31 30615-32 30669-33 30670-33 30615-33 30615-35 30616-31 30616-32 30671-33 30616-33 30671-34 30616-34 30617-31 30617-32 30673-33 30617-33 30617-35 30618-31 30618-32 30674-33 30618-33 30618-34 30675-33 30619-33 30619-35 30676-33 30620-33 30620-35 30621-31 30677-33 30621-33 30621-35 30622-31 30678-33 30622-33
30666-41 30613-41 30666-42 30613-42 30667-43 30666-43 30613-43 30666-45 30613-45 30614-41 30614-42 30688-43 30668-43 30614-43 30614-44 30615-41 30615-42 30669-43 30670-43 30615-43 30615-45 30616-41 30616-42 30671-43 30616-43 30671-44 30616-44 30617-41 30617-42 30673-43 30617-43 30617-45 30618-41 30618-42 30674-43 30618-43 30618-44 30675-43 30619-43 30619-45 30676-43 30620-43 30620-45 30621-41 30677-43 30621-43 30621-45 30622-41 30678-43 30622-43
HAND TAPS GROUND THREAD HSS
FRACTIONAL SIZES Nominal Size 1/2-20 UNF 9/16-12 UNC 9/16-12 UNC 9/16-12 UNC 9/16-18 UNF 9/16-18 UNF 9/16-18 UNF 5/8-11 UNC 5/8-11 UNC 5/8-11 UNC 5/8-18 UNF 5/8-18 UNF 5/8-18 UNF 11/16-11 NS 11/16-16 NS 3/4-10 UNC 3/4-10 UNC 3/4-10 UNC 3/4-10 UNC 3/4-16 UNF 3/4-16 UNF 3/4-16 UNF 3/4-16 UNF 7/8-9 UNC 7/8-9 UNC 7/8-9 UNC 7/8-14 UNF 7/8-14 UNF 7/8-14 UNF 1-8 UNC 1-8 UNC 1-8 UNC 1-12 UNF 1-14 NS 1-14 NS 1-14 NS 1 1/8-7 UNC 1 1/8-12 UNF 1 1/4-7 UNC 1 1/4-12 UNF 1 3/8-6 UNC 1 3/8-12 UNF 1 1/2-6 UNC 1 1/2-12 UNF 1 3/4-5 UNC 2-4 1/2 UNC
H Limits 5 2 3 5 2 3 5 2 3 5 2 3 5 3 3 1 2 3 5 1 2 3 5 2 4 6 2 4 6 2 4 6 4 2 4 6 4 4 4 4 4 4 4 4 4 4
# of Flutes 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 6 4 6 6 6
Thread Length 1 21/32 1 21/32 1 21/32 1 21/32 1 21/32 1 21/32 1 21/32 1 13/16 1 13/16 1 13/16 1 13/16 1 13/16 1 13/16 1 13/16 1 13/16 2 2 2 2 2 2 2 2 2 7/32 2 7/32 2 7/32 2 7/32 2 7/32 2 7/32 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 1/2 2 9/16 2 9/16 2 9/16 2 9/16 3 3 3 3 3 3/16 3 9/16
Overall Length 3 3/8 3 19/32 3 19/32 3 19/32 3 19/32 3 19/32 3 19/32 3 13/16 3 13/16 3 13/16 3 13/16 3 13/16 3 13/16 4 1/32 4 1/32 4 1/4 4 1/4 4 1/4 4 1/4 4 1/4 4 1/4 4 1/4 4 1/4 411/16 4 11/16 4 11/16 4 11/16 4 11/16 4 11/16 5 1/8 5 1/8 5 1/8 5 1/8 5 1/8 5 1/8 5 1/8 5 7/16 5 7/16 5 3/4 5 3/4 6 1/6 6 1/6 6 3/8 6 3/8 7 7 5/8
Taper Part No. 30622-15 30623-12 30623-13 30623-15 30624-12 30624-13 30624-15 30625-12 30625-13 30625-15 30626-12 30626-13 30626-15 30627-13 30628-13 30629-11 30629-12 30629-13 30629-15 30630-11 30630-12 30630-13 30630-15 30631-12 30631-14 30631-16 30632-12 30632-14 30632-16 30633-12 30633-14 30633-16 30634-14 30635-12 30635-14 30635-16 30636-14 30637-14 30638-14 30679-14 30640-14 30680-14 30644-14 30681-14 30682-14 30683-14
Plug Part No.
30622-25 30623-22 30623-23 30623-25 30624-22 30624-23 30624-25 30625-22 30625-23 30625-25 30626-22 30626-23 30626-25 30627-23 30628-23 30629-21 30629-22 30629-23 30629-25 30630-21 30630-22 30630-23 30630-25 30631-22 30631-24 30631-26 30632-22 30632-24 30632-26 30633-22 30633-24 30633-26 30634-24 30635-22 30635-24 30635-26 30636-24 30637-24 30638-24 30679-24 30640-24 30680-24 30644-24 30681-24 30682-24 30683-24
Bottom Part No.
Set Part No.
30622-35 30623-32 30623-33 30623-35 30624-32 30624-33 30624-35 30625-32 30625-33 30625-35 30626-32 30626-33 30626-35 30627-33 30628-33 30629-31 30629-32 30629-33 30629-35 30630-31 30630-32 30630-33 30630-35 30631-32 30631-34 30631-36 30632-32 30632-34 30632-36 30633-32 30633-34 30633-36 30634-34 30635-32 30635-34 30635-36 30636-34 30637-34 30638-34 30679-34 30640-34 30680-34 30644-34 30681-34 30682-34 30683-34
30622-45 30623-42 30623-43 30623-45 30624-42 30624-43 30624-45 30625-42 30625-43 30625-45 30626-42 30626-43 30626-45 30627-43 30628-43 30629-41 30629-42 30629-43 30629-45 30630-41 30630-42 30630-43 30630-45 30631-42 30631-44 30631-46 30632-42 30632-44 30632-46 30633-42 30633-44 30633-46 30634-44 30635-42 30635-44 30635-46 30636-44 30637-44 30638-44 30679-44 30640-44 30680-44 30644-44 30681-44 30682-44 30683-44
5
HAND TAPS Hi - Carbon Steel - Cut Thread MACHINE SCREW SIZES
Nominal Size 4-40 UNC 4-48 UNF 4-32 NS 4-36 NS 5-40 UNC 5-44 UNF 6-32 UNC 6-40 UNF 6-36 NS 6-48 NS 8-32 UNC 8-36 UNF 8-40 NS 10-24 UNC 10-32 UNF 10-30 NS 12-24 UNC 12-28 UNF 12-32 NS 14-20 NS 14-24 NS
# of Flutes 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 5 4 4
Thread Length 9/16 9/16 9/16 9/16 5/8 5/8 11/16 11/16 11/16 11/16 3/4 3/4 3/4 7/8 7/8 7/8 15/16 15/16 15/16 1 1
1 7/8 1 7/8 1 7/8 1 7/8 1 15/16 1 15/16 2 2 2 2 2 1/8 2 1/8 2 1/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 1/2 2 1/2
Taper Part No. 10602-10 10603-10 10600-10 10601-10 10604-10 10605-10 10606-10 10608-10 10607-10 10609-10 10610-10 10611-10 10612-10 10613-10 10615-10 10614-10 10616-10 10617-10 10618-10 10619-10 10620-10
OAL
Taper Part No.
1 5/8 1 13/16 1 13/16 1 15/16 2 1/8 2 1/8 2 3/8 2 3/8 2 1/2 2 1/2 2 1/2 2 1/2 2 23/32 2 23/32 2 23/32 2 15/16 2 15/16
10685-10 10686-10 10687-10 10621-10 10622-10 10623-10 10624-10 10625-10 10628-10 10630-10 10629-10 10631-10 10632-10 10633-10 10634-10 10635-10 10636-10
OAL
Plug Part No. 10602-20 10603-20 10600-20 10601-20 10604-20 10605-20 10606-20 10608-20 10607-20 10609-20 10610-20 10611-20 10612-20 10613-20 10615-20 10614-20 10616-20 10617-20 10618-20 10619-20 10620-20
Bottom Part No.
Set Part No.
10602-30 10603-20 10600-30 10601-30 10604-30 10605-30 10606-30 10608-30 10607-30 10609-30 10610-30 10611-30 10612-30 10613-30 10615-30 10614-30 10616-30 10617-30 10618-30 10619-30 10620-30
10602-40 10603-20 10600-40 10601-40 10604-40 10605-40 10606-40 10608-40 10607-40 10609-40 10610-40 10611-40 10612-40 10613-40 10615-40 10614-40 10616-40 10617-40 10618-40 10619-40 10620-40
Bottom Part No.
Set Part No.
10685-30 10686-30 10687-30 10621-30 10622-30 10623-30 10624-30 10625-30 10628-30 10630-30 10629-30 10631-30 10632-30 10633-30 10634-30 10635-30 10636-30
10685-40 10686-40 10687-40 10621-40 10622-40 10623-40 10624-40 10625-40 10628-40 10630-40 10629-40 10631-40 10632-40 10633-40 10634-40 10635-40 10636-40
FRACTIONAL SIZES Nominal Size 1/16-64 NS 3/32-48 NS 3/32-50 NS 1/8-40 NS 5/32-32 NS 5/32-36 NS 3/16-24 NS 3/16-32 NS 1/4-20 UNC 1/4-28 UNF 1/4-24 NS 1/4-32 NS 5/16-18 UNC 5/16-24 UNF 5/16-32 NS 3/8-16 UNC 3/8-24 UNF
6
# of Flutes 2 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4
Thread Length 5/16 1/2 1/2 5/8 3/4 3/4 7/8 7/8 1 1 1 1 1 1/8 1 1/8 1 1/8 1 1/4 1 1/4
Plug Part No. 10685-20 10686-20 10687-20 10621-20 10622-20 10623-20 10624-20 10625-20 10628-20 10630-20 10629-20 10631-20 10632-20 10633-20 10634-20 10635-20 10636-20
HAND TAPS Hi - Carbon Steel - Cut Thread FRACTIONAL SIZES Nominal Size
# of Flutes
Thread Length
OAL
Taper Part No.
Plug Part No.
Bottom Part No.
Set Part No.
7/16-14 UNC 7/16-20 UNF 1/2-13 UNC 1/2-20 UNF 9/16-12 UNC 9/16-18 UNF 5/8-11 UNC 5/8-18 UNF 11/16-11 NS 11/16-16 NS 3/4-10 UNC 3/4-16 UNF 7/8-9 UNC 7/8-14 UNF 7/8-18 NS 1-8 UNC 1-12 UNF 1-14 NS 1 1/8-7 UNC 1 1/8-12 UNF 1 1/4-7 UNC 1 1/4-12 UNF 1 3/8-6 UNC 1 3/8-12 UNF 1 1/2-6 UNC 1 1/2-12 UNF 1 3/4-5 UNC 2-4 1/2 UNC
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 6 4 6 4 6 6 6
1 7/16 1 7/16 1 21/32 1 21/32 1 21/32 1 21/32 1 13/16 1 13/16 1 13/16 1 13/16 2 2 2 7/32 2 7/32 2 7/32 2 1/2 2 1/2 2 1/2 2 9/16 2 9/16 2 9/16 2 9/16 3 3 3 3 3 3/16 3 9/16
3 5/32 3 5/32 3 3/8 3 3/8 3 19/32 3 19/32 3 13/16 3 13/16 4 1/32 4 1/32 4 1/4 4 1/4 4 11/16 4 11/16 4 11/16 5 1/8 5 1/8 5 1/8 5 7/16 5 7/16 5 3/4 5 3/4 6 1/6 6 1/6 6 3/8 6 3/8 7 7 5/8
10637-10 10638-10 10639-10 10640-10 10641-10 10642-10 10643-10 10644-10 10645-10 10646-10 10647-10 10648-10 10649-10 10650-10 10651-10 10652-10 10653-10 10654-10 10655-10 10656-10 10657-10 10658-10 10660-10 10674-10 10662-10 10663-10 10675-10 10661-10
10637-20 10638-20 10639-20 10640-20 10641-20 10642-20 10643-20 10644-20 10645-20 10646-20 10647-20 10648-20 10649-20 10650-20 10651-20 10652-20 10653-20 10654-20 10655-20 10656-20 10657-20 10658-20 10660-20 10674-20 10662-20 10663-20 10675-20 10661-20
10637-30 10638-30 10639-30 10640-30 10641-30 10642-30 10643-30 10644-30 10645-30 10646-30 10647-30 10648-30 10649-30 10650-30 10651-30 10652-30 10653-30 10654-30 10655-30 10656-30 10657-30 10658-30 10660-30 10674-30 10662-30 10663-30 10675-30 10661-30
10637-40 10638-40 10639-40 10640-40 10641-40 10642-40 10643-40 10644-40 10645-40 10646-40 10647-40 10648-40 10649-40 10650-40 10651-40 10652-40 10653-40 10654-40 10655-40 10656-40 10676-40 10658-40 10660-40 10674-40 10662-40 10663-40 10675-40 10661-40
7
PIPE TAPS AND REAMERS TAPER PIPE TAPS Generally used for pope fittings and couplings. Designed to provide pressure-tight joints and for threading a wide variety of materials. Has a chamfer of 2 1/2 - 3 1/2 threads. Pipe Size 1/16 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4
Threads Per Inch 27 27 18 18 14 14 11 1/2 11 1/2 11 1/2 11 1/2 8 8 8 8
# of Flutes
Thread Length
OAL
Carbon Cut NPT
HSS Ground NPT
4 4 4 4 4 5 5 5 7 7 8 8 8 8
11/16 3/4 1 1/16 1 1/16 1 3/8 1 3/8 1 3/4 1 3/4 1 3/4 1 3/4 2 3/4 2 3/4 2 3/4 3
2 1/8 2 1/8 2 7/16 2 9/16 3 1/8 3 1/4 3 3/4 4 4 1/4 41/2 5 1/2 6 6 1/2 7
11400-00 11401-00 11402-00 11403-00 11404-00 11405-00 11406-00 11407-00 11408-00 11409-00 11410-00 11411-00 11412-00 11413-00
31400-00 31401-00 31402-00 31403-00 31404-00 31405-00 31406-00 31407-00 31408-00 31409-00 31410-00 31411-00 -
HSS TAPER PIPE REAMERS Taper 3/4” per foot Tapered 3/4” per foot and used for reaming holes to be tapped with standard Taper Pipe Taps Size
Small Dia
Large Dia
1/16 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2
.316 .406 .540 .665 .876 1.103 1.444 1.684 2.159 2.561
.291 .362 .472 .606 .751 .962 1.212 1.553 1.793 2.268 2.717
Flute Length 3/4 3/4 1-1/16 1-1/16 1-3/8 1-3/8 1-3/4 1-3/4 1-3/4 1-3/4 2 9/16
OAL 2 2-1/8 2-7/16 2-9/16 3-1/8 3-1/4 3-3/4 4 4-1/4 4-1/2 5-1/2
Straight Flute EDI # 914016 914017 914018 914019 914020 914021 914022 914023 914024 914025 914026
TAPER PIPE TAP 6 PIECE SET Furnished in a plastic pouch. High Speed Steel taps last longer than carbon steel taps. Ground-thread taps have a more precise tolerance than cut thread. Contains one each of NPT pipe tap sizes 1/8”, 1/4”, 3/8”, 1/2”, 3/4”, 1”. Carbon-Steel Cut-Thread Set High-Speed Steel Ground-Thread Set
8
EDI # 2765A42 2765A44
Spiral Flute EDI 101401 101402 101403 101404 101405 101406 101407 104708 104709 104710 104710
H.S. ROUND ADJUSTABLE DIES STANDARD SIZES
STANDARD SIZES
MACHINE SCREW Style 700
Size #0-80 1-64 1-72 2-56 2-64 3-48 3-56 4-40 4-48 5-40 5-44 6-32 6-40 8-32 8-36 10-24 10-32 12-24 12-28 14-20 14-24
13/16" OD Part No. 700-00080 700-00164 700-00172 700-00256 700-00264 700-00348 700-00356 700-00440 700-00448 700-00540 700-00544 700-00632 700-00640 700-00832 700-00836 700-01024 700-01032 700-01224 700-01228 700-01420 700-01424
FRACTIONAL
Style 701 1" OD Part No. 701-00080 701-00164 701-00172 701-00256 701-00264 701-00348 701-00356 701-00440 701-00448 701-00540 701-00544 701-00632 701-00640 701-00832 701-00836 701-01024 701-01032 701-01224 701-01228 701-01420 701-01424
Style 704
Style 705
2 1/2" OD Part No. 704-06408 704-06412 704-06414 704-07207 704-07212 704-08007 704-08012 704-08806 704-08812 704-09606 704-09612 -
3" OD Part No. 705-06408 705-06412 705-06414 705-07207 705-07212 705-08007 705-08012 705-08806 705-08812 705-09606 705-09612 705-11205 705-11212 705-12805 705-12812
Size 1 -8 1 - 12 1 - 14 1 1/8-7 1 1/8-12 1 1/4-7 1 1/4-12 1 3/8-6 1 3/8-12 1 1/2-6 1 1/2- 12 1 3/4-5 1 3/4-12 2-4 1/2 2-12
STANDARD SIZES FRACTIONAL
Size 1/4 - 20 1/4 - 28 5/16- 18 5/16-24 3/8- 16 3/8 - 24 7/16-14 7/16-20 1/2- 13 1/2 - 20 9/16- 12 9/16-18 5/8-11 5/8- 18 11/16- 11 11/16-16 3/4-10 3/4-16 7/8-9 7/8- 14 1 -8 1 - 12 1 - 14
Style 700
Style 701
Style 702
13/16" OD Part No. 700-01620 700-01628 700-02018 700-02024 -
1" OD Part No. 701-01620 701-01628 701-02018 701-02024 701-02416 701-02424 701-02814 701-02820 701-03213 701-03220 -
1 1/2" Part No. 702-01620 702-01628 702-02018 702-02024 702-02416 702-02424 702-02814 702-02820 702-03213 702-03220 702-03612 702-03618 702-04011 702-04018 702-04411 702-04416 702-04810 702-04816 -
Style 703 2" OD Part No. 703-01620 703-01628 703-02018 703-02024 703-02416 703-02424 703-02814 703-02820 703-03213 703-03220 703-03612 703-03618 703-04011 703-04018 703-04411 703-04416 703-04810 703-04816 703-05609 703-05614 703-06408 703-06412 703-06414
9
HSS AND C.S HEXAGON DIES HSS HEXAGON DIES
C.S. HEX DIES STANDARD Style 216
Style 716
Size 4-40 6-32 8-32 10-24 10-32 12-24 1/4 - 20 1/4 - 28 5/16 - 18 5/16 - 24 3/8 - 16 3/8 - 24 7/16 - 14 7/16 - 20 1/2 - 13 1/2 - 20 9/16 - 12 9/16 - 18 5/8 - 11 5/8 - 18 3/4 - 10 3/4 - 16 7/8 - 9 7/8 - 14 1-8 1 - 12 1 - 14 1 1/8 - 7 1 1/8 - 12 1 1/4 - 7 1 1/4 - 12 1 3/8 - 6 1 3/8 - 12 1 1/2 - 6 1 1/2 - 12
10
Part No. 716-00440 716-00441 716-00442 716-00443 716-00444 716-00445 716-00446 716-00447 716-00448 716-00449 716-00450 716-00451 716-00452 716-00453 716-00454 716-00455 716-00456 716-00457 716-00458 716-00459 716-00460 716-00461 716-00462 716-00463 716-00464 716-00465 716-00466 716-00467 716-00468 716-00469 716-00470 716-00471 716-00472 716-00473 716-00474
Size 4-40 4-48 5-40 5-44 6-32 6-40 8-32 8-36 10-24 10-32 12-24 12-28 1/4 - 20 1/4 - 28 5/16 - 18 5/16 - 24 3/8 - 16 3/8 - 24 7/16 - 14 7/16 - 20 1/2 - 13 1/2 - 20 9/16 - 12 9/16 - 18 5/8 - 11 5/8 - 18 11/16 - 11 11/16 - 16 3/4 - 10 3/4 - 16 7/8 - 9 7/8 - 12 1-8 1-12 1-2 1 1/8 - 7 1 1/8 - 12 1 1/2 - 7 1 1/2 - 8 1 1/4 - 12 1 3/8 - 6 1 3/8 - 12 1 1/2 - 6 1 1/2 - 12 1 5/8 - 5 1/2 1 5/8 - 12 1 3/4 - 5 1 3/4 - 12 2 - 4 1/2 2 - 12 2 1/4 - 4 1/2 2 1/2 - 4 2 3/4 - 4 3-4 3 1/4 - 4 3 1/2 - 4 3 3/4 - 4 4-4
Part No. 216-00440 216-00441 216-00442 216-00443 216-00444 216-00445 216-00446 216-00447 216-00448 216-00449 216-00450 216-00451 216-00452 216-00453 216-00454 216-00455 216-00456 216-00457 216-00458 216-00459 216-00460 216-00461 216-00462 216-00463 216-00464 216-00465 216-00466 216-00467 216-00468 216-00469 216-00470 216-00471 216-00472 216-00473 216-00474 216-00475 216-00476 216-00477 216-00478 216-00479 216-00480 216-00481 216-00482 216-00483 216-00484 216-00485 216-00486 216-00487 216-00488 216-00489 216-00490 216-00491 216-00492 216-00493 216-00494 216-00495 216-00496 216-00497
TAP AND DIE HOLDERS T-HANDLE TAP WRENCHES PLAIN TYPE
- For hand tapping and for driving Screw Extractors - Heavily knurled cap for better grip Catalog EDI-Number 38328 38329 38333 38336 38337 38338 38339 38340
Hand Inches 1/16-1/4 1/16-1/4 7/32-1/2 7/32-1/2 1/16-1/4 7/32-1/2 1/16-1/4 7/32-1/2
Machine Screw 0-14 0-14 12-14 12-14 0-14 12-14 0-14 12-14
Length Inches 2 3/4 2 3/4 3 5/8 3 5/8 8 3/4 10 5/8 3 3/4 5
ADJUSTABLE TAP & REAMER WRENCHES List No. 1825 These wrenches are made of tool steel, with carefully hardened and tempered jaws used for taps or remers Catalog EDI-Number 33743 33744 33745 33746 33747 33748 33749 33750
Hand Inches 1/16-1/4 1/16-1/4 1/16-3/8 5/32-1/2 5/32-3/4 1/4-1 1/8 1/2-1 3/8 3/4-1 5/8
Machine Screw 0-14 0-14 0-14 7-14 7-14
Pipe 1/8 1/8-1/4 1/8-3/4 1/8-1 3/8-1 1/4
Hand Reamer Inches 1/8-17/64 1/8-21/64 1/8-25/64 11/64-7 1/16 11/64-4 1/64 9/32-29/32 3/8-1 5/32 37/64-1 11/32
Length Inches 5 7 9 11 15 19 31 40
Weight 2 oz. 4 oz. 7 oz. 11 oz. 1 lb. 10 oz. 2 lb. 14 oz. 4 lb. 8 oz. 8 lbs.
STOCKS FOR ADJUSTABLE ROUND SPLIT DIES These die stocks are designed to accommodate the round screw adjustable dies listed on page 28-40. Catalog EDI-Number 381850 381851 381852 381853 381857 381858 381859
Takes Dies Outside Dia Inches 5/8 13/16 1 1 1/2 2 2 1/2 3
Length Inches 5 6 1/4 9 14 23 29 40
Weight lbs 1/16 1/8 5/16 1 1/4 1 7/8 2 1/2 2 7/8
11
TAP NOMENCLATURE
12
TROUBLE-SHOOTING TAP TEETH CHIP
PROBLEM
TAP WEAR POOR
HELPFUL HINTS FOR SUCCESSFUL TAPPING
TAP BINDING TAP LOADING HEAVY BURR ON PRODUCT MINOR DIA. ENTERING THREADS REAMED OUT
INSTRUCTIONS 1 - Locate your “Problem” in upper-left corner
TAP BREAKAGE TORN THREADS BELLMOUTH THREADS THREADS TOO SMALL THREADS TOO LARGE
X
X
X
X
X
X
POSSIBLE CAUSE
SUGGESTED CORRECTION
Misalignment
Align Tap Properly with Hole.
Tap Runout in Holder
Correct or Replace Holder.
Tap Bottoming in Blind Hole
Drill Deeper or Tap Shallower.
Thin Walled Part Closing In
Use next Larger Size Standard Tap. Use New, Sharp Taps without Worn Edges.
X
Tap Overcutting and Undercutting Its Lead
Decrease Forward Pressure for Overcut Increase for Undercut, Eliminate Lead Screw Backlash.
X
Tap Cutting on Reversal
Reduce Withdrawal Pressure, Eliminate all Lead Screw Backlash.
Loading On Tap Teeth Metal welds on tap
Check Tapping Fluid & Speeds, Reduce Speed, Increase Fluid.
X
X
X
X
X
X X X
X
2 - In the column below follow each checked line horizontally through the “Possible Cause” to the “Suggested Correction.” Eliminate each in sequence.
X
X
X
X
X
X
X
X
Wrong or Insufficient Tapping Fluid
Check for Suggested Tapping Fluids. Increase Flow.
X
Drilled Hole too Small
Use Properly Sharpened Drills of Size Suggested in Table.
X
X
X
X
X
X
X
X
X
X
X
Hole Work Hardened in Drilling
Feed Properly Sharpened Drill into Work with Copious Lubricant. Keep Drill Cutting.
X
X
X
X
Hard Spots in Material
Use Slower Speed, Anneal Material if Possible.
X
Gage Worn Undersize
Check Gages Frequently. Replace if Doubtful.
X
Chips Packed in Tap Flute
Withdraw Tap More Often to Clear Chips. Recheck for Proper Tap.
Chipped Teeth on Tap
Replace Tap or Omit Surface Treatment.
X
Incorrect Flute Hook for Material Being Tapped
Recheck for Proper Tap.
X
Tap Too Large
X
X
X
X
X X
X X
X
X
X
X
X
X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
Recheck for Proper Tap. Drop to Next Smaller Standard Tap if Necessary. Recheck for Proper Tap. Use Next Larger Standard Tap if Necessary.
X
Tap Too Small
X
Tap Worn on Cutting Edge Crest, or Pitch Diameter
Replace Tap. If you have Proper Chamfering Equipment, Rechamfer Taps over 1/2" Diameter.
X
Incorrect Chamfer
Recheck for Proper Tap. Bottom Chamfer is too Severe for Some Materials.
X
Excess Speed
Speeds are Valid Only with Correct Tapping Fluid Properly Applied.
Nitride Treatment Not Needed
Try Taps Without Nitride. Nitride is NOT Recommended for Hand Tapping.
Surface Treatment Needed
Treated ONLY for stable machine applications where, a history of chipping is not present.
X
13
TAP DRILL SIZES Tap
Tap Drill
7/8-14 51/64 13/16 1"-8 55/64 7/8 57/64 29/32 1"-12 29/32 59/64 15/16 1"-14 59/64 15/16 1 1/8-7 31/32 63/64 1 1 1/64 1 1/8-12 1 1/32 1 3/64
Decimal Theoretical Probable Probable Percentage Equiv. of Tap % of Oversize Hole Size of Thread Drill Thread (Mean) .7969 .8125 .8594 .875 .8906 .9063 .9063 .9219 .9375 .9219 .9375 .9688 .9844 1.000 1.0156 1.0313 1.0469
84 67 87 77 67 58 87 72 58 84 67 84 76 67 59 87 72
.0052 .0052 .0059 .0059 .0059 .0059 .0060 .0060 .0060 .0060 .0060 .0062 .0067 .0070 .0070 .0071 .0072
.8021 .8177 .8653 .8809 .8965 .9122 .9123 .9279 .9435 .9279 .9435 .9750 .9911 1.007 1.0226 1.0384 1.0541
79 62 83 73 64 54 81 67 52 78 61 81 72 64 55 80 66
Tap 1 1/4-7
1 1/4-12 1 3/8-6
1 3/8-12 1 1/2-6
1 1/2-12
Decimal Theoretical Probable Probable Percentage Tap Drill Equiv. of Tap % of Oversize Hole Size of Thread Drill Thread (Mean) 1 3/32 1 7/64 1 1/8 1 5/32 1 11/64 1 3/16 1 13/64 1 7/32 1 15/64 1 9/32 1 19/64 1 5/16 1 21/64 1 11/32 1 23/64 1 13/32 1 27/64
1.0938 1.1094 1.125 1.1563 1.1719 1.1875 1.2031 1.2188 1.2344 1.2813 1.2969 1.3125 1.3281 1.3438 1.3594 1.4063 1.4219
84 76 67 87 72 87 79 72 65 87 72 87 79 72 65 87 72
Reaming Recommended
TAP DRILL SIZE FORMULAE .01299 X Amt. of percentage of full thread No. of threads per inch
Major Diam. of Thread
= Drilled Hole Size
Percentage of Full Thread for Other Drill Sizes No. of Threads per Inch
X
(
Selected Major Diam. Drill Diam. of Thread .01299
TAP THREAD DESIGNATION SYMBOLS* NC *UNC NF *UNF NEF *UNEF N *UN MS *UNS UNM NR PTF ACME ACME-G STUB ACME AMO N BUTT V
)
= % of Full Thread American Standard Ref. No. B1.1 B1.1 B1.1 B1.1 B1.1 B1.1
American National Coarse Thread Series Unified Coarse Thread Series American National Fine Thread Series Unified Fine Thread Series American National Extra-Fine Thread Series Unified Extra-Fine Thread Series American National 8, 12 and 16 Thread Series Unified Constant - Pitch Thread Series B1.1 American National Thread - Special B1.1 Unified Thread - Special B1.1 Unified Miniature Thread Series B1.10 American National Thread with a 0.108p to 0.144p Controlled Root Radius MIL-B-7838 Dryseal SAE Short Taper Pipe Thread Acme Thread - Centralizing B1.5 Acme Thread - General Purpose B1.5 Stub Acme Thread B1.8 American Standard Microscope Objective Thread B1.11 American Buttress Thread B1.9 A 60° "V" thread with Truncated Crest and Root The theoretical "V" Form is usually flatted to the user's specifications SB Manufacturers Stovebolt Standard Thread STI Special Thread for Helical Coil Wire Screw Thread Inserts SGT Special Gas Taper Thread B57.1 SPL-PTF Dryseal Special Taper Thread B2.2 'Taps are not marked with "U" but with the symbol for the corresponding American Standard thread form with which it is compatible.
14
THREAD SERIES DESIGNATIONS STANDARD TAP MARKING
PRODUCT THREAD DESIGNATION
THREAD SERIES
REFERENCES AMERICAN NATIONAL STANDARDS (ANSI/ASME) B1.5
ACME-C
ACME-C
Acme threads, centralizing
ACME-G
ACME-G
Acme thread, general purpose (See also "STUB ACME")
B1.5
AMO
AMO
American Standard microscope objective threads
B1.11 (MIL-P-7105B)
NPT
ANPT
Aeronautical National Form taper pipe threads
BUTT
BUTT
Buttress Threads, pull type
B1.9
PUSH-BUTT
PUSH-BUTT
Buttress Threads, push type
B1.9
F-PTF
F-PTF
Dryseal fine taper pipe thread series
B1.20.3 (Appendix C)
M
M
Metric Screw Threads - M Profile with basic ISO 68 profile
B1.13M, B1.18M
MJ
MJ
Metric Screw Threads - MJ Profile with rounded root of radius 0.15011P to 0.18042P
B1.21M
MJS
MJS
Metric Screw Threads - MJ Profile, special series Class 5 interference fit Internal Threads
B1.12
NC
NC5IF
- Entire ferrous material range - Entire nonferrous material range
NC
NC5INF
NGO (RH or LH)
NGO
National gas outlet threads
ANSI/CGAV-1 (B57.1)
NGS
NGS
National gas straight threads
ANSI/CGAV-1 (B57.1)
NGT
NGT
National gas taper threads
ANSI/CGAV-1 (B57.1)
NH
NH
American Standard hose coupling threads of full form
B2.4
NPS
NPSC
American Standard straight pipe threads in pipe couplings
B1.20.1
NPSF
NPSF
Dryseal American Standard fuel internal straight pipe threads
B1.20.3
NPSH
NPSH
American Standard straight hose coupling threads for joining to American Standard Taper pipe threads
B2.4
NPSI
NPSI
Dryseal American Standard intermediate internal straight pipe threads
B1.20.3
NPSL
NPSL
American Standard straight pipe threads for loose-fitting mechanical joints with locknuts
B1.20.1
NPS
NPSM
American Standard straight pipe threads for free-fitting mechanical joints for fixtures
B1.20.2
NPT
NPT
American Standard taper pipe threads for general use
B1.20.1
NPTF
NPTF
Dryseal American Standard taper pipe threads
B1.20.3
NPTR
NPTR
American Standard taper pipe threads for railing joints
B1.20.1
PTF SHORT
PTF-SAE SHORT
Dryseal SAE short taper pipe threads
PTF SPL SHORT PTF SPL
PTF-SPL SHORT PTF-SPL EXTRA
Dryseal special short taper pipe threads
X-SHORT
SHORT
Dryseal special extra short taper threads (See also "SPL-PTF")
M
S
ISO Miniature screw threads 0.25 to 1.4mm inc.
B1.20.3 B1.20.3 (Appendix C) B1.20.3 (Appendix C)
SGT
SGT
Special gas taper threads
ANSI/CGAV-1 (B57.1)
SPL-PTF
SPL-PTF
Dryseal special taper pipe threads
B1.20.3 (Appendix C)
STUB ACME
STUB ACME
Stub Acme threads
B1.8
STUB ACME M1
STUB ACME M1
Stub Acme Modified Form 1
B1.8
STUB ACME M2
STUB ACME M2
Stub Acme Modified Form 2
B1.8
N
UN
Unified inch screw thread, constant-pitch series
B1.1
NC
UNC
Unified inch screw thread, coarse-pitch series
B1.1 B1.1
NF
UNF
Unified inch screw threwd, fine-pitch series
NEF
UNEF
Unified inch screw thread, extra-fine pitch series
B1.1
N
UNJ
Unified inch screw thread, constant-pitch series, with rounded root of radius 0.15011P to 0.18042P. (Ext. thd. only)
B1.15 (Draft) MIL-S-8879A
NC
UNJC
Unified inch screw thread, coarse-pitch series, with rounded root of radius 0.15011P to 0.18042P. (Ext. thd. only)
B 1.15 (Draft) MIL-S-8879A
15
WORD AND TERM DEFINITIONS Applying to Screw Threads, Taps, and Dies Allowance. An allowance is an intentional difference in correlated dimensions of mating parts. It is the minimum clearance (positive allowance) or maximum interference (negative allowance) between such parts. Angle of Thread. The angle included between the flanks of the thread, measured in an axial plane. Axis. The longitudinal central line through the screw or tap. Back Taper. A slight axial relief on the thread of the tap which makes the pitch diameter of the thread near the shank somewhat smaller than that at the chamfered end. (See Relief ) Basic. The theoretical or nominal standard size from which all variations are made. (See Size) Chamfer. The tapering of the end of the thread on a tap by cutting away and relieving the crest of the first few teeth to distribute the cutting action over several teeth. It also acts as a guide in starting the tap. When this tapering amounts to 8 to 10 threads, the tap is called a faper tap; when 3 to 5 threads, a plug tap; and with 1 1/2 threads chamfer, a bottoming tap. Core Diameter. The diameter of an imaginary cylinder tangent to the deepest part of the flute. Crest. The top surface joining the two flanks of a thread. The crest of an external thread is at its major diameter, while the crest of an internal thread is at its minor diameter. Crest Clearance. The space between the crest of a thread and the root of its component. Cutting Edge. The leading side of the land in the direction of rotation for cutting and which does the actual cutting. Depth of Thread. The distance between the crest and the base of the thread measured normal to the axis. Dryseal. A fuel connection for both external and internal application designed for use where the assembled product must withstand high fluid or gas pressures without the use of a sealing compound or where a sealer is functionally objectionable. Flank. The surface of the thread, sometimes referred to as side of thread, which connects the crest with the root. Flutes. The longitudinal channels formed in a tap to create cutting edges on the thread profile and to provide chip spaces and cutting-fluid passages. Flute Lead. The axial advance of a helical or spiral cutting edge in one turn around the tool axis. Heel. The face of the tap land trailing the cutting edge during forward rotation. Height of Thread. The distance between the crest and the base of thread measured normal to the axis. Helix Angle — Flute. Flutes of taps are sometimes cut helically instead of straight. This helix angle is the angle made by the flute with the axis of the tap. (Helical flutes are sometimes called spiral flutes.) Helix Angle — Thread. The angle made by the helix of a thread at the pitch diameter with a plane perpendicular to the axis. Hook. The concave cutting face of a tap land between the crest and the root of thread.
16
Interrupted Thread. A tap having an odd number of lands, with every other tooth along the thread helix removed. Land. One of the threaded sections between the flutes on a tap. Lead. The distance a screw thread advances axially in one complete turn. On a single-thread screw or tap, the lead and pitch are identical. On a double-thread, the lead is twice the pitch; on a triple-thread, the lead is three times the pitch, etc. Lead Error. The amount the actual lead of the screw thread differs from the specified lead. Lead — Drunken. Irregular advance of the thread helix, or lead. Usually called “drunken thread.” Length of Engagement. The length of contact between two mating threaded parts measured axially. Limits. The maximum and minimum sizes permissible for a specific dimension. (See Allowance and Tolerance.) Major Diameter. The largest diameter of a straight thread. On a taper thread, the largest diameter at any given plane normal to the axis. The term "major diameter" replaces the term "outside diameter" as applied to the thread of a screw or tap and also the term "full diameter" as applied to the thread of a nut or die. Minor Diameter. The smallest diameter of a straight thread. On a taper thread, the smallest diameter at any given plane normal to the axis. The term "minor diameter" replaces the terms "root diameter" and "core diameter" as applied to the thread of a screw or tap and also the term "inside diameter" as applied to the thread of a nut or die. Percent of Thread. One-half the difference between the basic major diameter and the actual minor diameter of an internal thread, divided by the basic thread height, expressed as percentage. Pitch. The distance from a point on a screw thread to a corresponding point on the next thread, measured parallel to the axis and on the same side of the axis. The pitch equals one divided by the number of threads per inch. Pitch Diameter. On a straight screw thread, the diameter of an imaginary cylinder, the surface of which would pass through the threads at such points as to make equal the width of the threads and the width of the spaces cut by the surface of the cylinder. On a taper screw thread, the diameter, at a given distance from a reference plane perpendicular to the axis of an imaginary cone, the surface of which would pass through the threads at such points as to make equal the width of the threads and the width of the spaces cut by the surface of the cone. Pitch Line. A generator of the imaginary cylinder or cone specified in the definition of PITCH DIAMETER. Rake. On a tap, any deviation of a straight cutting face of the tooth from a radial line. Positive rake means that the crest of the cutting face is angularly advanced ahead of the balance of the face of the tooth. Negative rake means that the same point is angularly behind the balance of the cutting face of the tooth. Zero rake means that the cutting face is directly on the center line. Relief — Radial. The clearance produced by removal of metal from behind the cutting edge. Taps should have the chamfer relieved and should have back taper, but may or may not have relief in the angle and on the major diameter of the threads. When the thread angle is relieved from heel to cutting edge, the tap is said to have eccentric relief. If relieved from heel for only a portion of land width (usually %) the tap is said to have “con-eccentric” relief (See Back Taper.)
WORD AND TERM DEFINITIONS (Cont.) Thread — Multiple. A thread in which the lead is an integral multiple of the pitch. On a double thread, the lead is equal to twice the pitch; on a triple thread the lead is equal to three times the pitch, etc. Such threads have starting points relative to their multiple equally spaced around their circumference. For example, a double thread has two starting points 180° apart, etc.
Root. The bottom surface joining the flanks of two adjacent threads. The root of an external thread is at its minor diameter, while the root of an internal thread is at its major diameter. Screw Thread. A ridge of uniform section in the form of a helix on the external or internal surface of a cylinder, or in the form of a conical spiral on the external or internal surface of a cone or frustum of a cone. A thread formed on a cylinder is known as a "straight" or "parallel" thread, to distinguish it from a "taper" thread which is formed on a cone or frustum of a cone. All lefthand threads are designated LH.
Thread — Drunken. A thread in which the advance of the thread helix is irregular.
Spiral Point. A supplementary fluting, cut at an angle to the main fluting, in the cutting face of the land. It is slightly longer than the chamfer on the tap and in the opposite hand to that of cutting rotation.
Tolerance. The amount of variation permitted in any dimension. Tolerance may be expressed as plus, minus, or both. A total tolerance is the sum of a plus and minus tolerance. Complete tolerances on threads include those for major diameter, minor diameter, pitch diameter, lead, half angle, and full angle. (See Allowance and Limits.)
Size — Basic. The theoretical size from which the limits of size for that dimension are derived by the application of the allowance and tolerances.
Truncation — Crest. The distance, measured perpendicular to the axis, between the sharp crest (or crest apex) and the cylinder or cone which bounds the crest.
Size — Nominal. The designation used for general identification.
Truncation — Root. The distance, measured perpendicular to the axis, between the sharp root (or root apex) and the cylinder or cone which bounds the root.
Thread — Single. A thread in which the lead is equal to the pitch.
SPEEDS FOR TAPS
Conversion Chart - fpm to rpm Feet Per Minute No. Size 0 1 2 3 4 5 6 8 10 12 14
Frac. Size, Inch
1/8
1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1
20'
25'
30'
35'
40'
50'
55'
Size Dec. .062 .075 .089 .102 .115 .128 .141 .168 .194 .220 .247 .255 .318 .381 .444 .507 .633 .759 .885 1.011
60'
65'
70'
80'
90'
100'
110'
160'
180'
200'
220'
5525 4580 3860 3360 2980 2680 2440 2040 1770 1560 1390 1350 1080 880 770 680 550 460 395 345
6150 5085 4280 3760 3320 2980 2720 2280 1960 1740 1540 1500 1200 1000 860 760 610 510 435 380
6770 5600 4720 4120 3650 3280 2980 2500 2160 1910 1700 1650 1320 1100 950 830 670 560 480 420
9850 11,050 12,300 13,540 8145 9170 10,170 11,200 6870 7730 8580 9440 5980 6230 7490 8230 5310 5975 6640 7300 4760 5360 5960 6560 4320 4880 5440 5960 3640 4080 4560 5000 3160 3540 3920 4320 2760 3120 3430 3820 2480 2780 3680 3400 2400 2700 3000 3300 1920 2160 2400 2640 1600 1760 2000 2200 1360 1540 1720 1990 1200 1360 1520 1660 975 1100 1220 1340 815 920 1020 1120 700 785 870 960 610 685 765 840
Revolutions Per Minute 1230 1020 855 750 665 595 540 455 395 345 310 300 240 200 170 150 120 100 85 76
1540 1275 1070 940 830 745 680 570 490 435 385 375 300 250 215 190 150 125 110 95
1850 1530 1290 1125 995 895 815 680 590 520 465 450 360 300 260 225 180 155 130 114
2150 1780 1500 1310 1160 1045 950 795 690 610 540 525 420 350 300 265 210 180 155 135
2460 2040 1710 1500 1330 1190 1080 910 790 690 620 600 480 400 340 300 240 205 175 155
3080 2550 2140 1880 1660 1490 1360 1140 980 870 770 750 600 500 430 380 305 255 220 190
3390 2700 2360 2060 1825 1640 1490 1250 1080 955 850 825 660 550 475 415 335 280 240 210
3700 3060 2580 2250 1990 1790 1630 1360 1180 1040 930 900 720 600 520 450 365 305 260 230
4000 3310 2790 2435 2160 1940 1760 1480 1280 1130 1000 975 780 650 560 490 395 330 275 250
4300 3560 3000 2620 2320 2090 1900 1590 1380 1220 1080 1050 840 700 600 530 425 355 305 270
4925 4070 3420 3000 2660 2380 2160 1820 1580 1380 1240 1200 960 800 680 600 490 405 350 305
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TAP SHARPENING AND FAULTS A Tap is a tool used to produce internal (female) threads to receive screws, bolts or threade d parts in accordance with established classes of fit. Taps are manufactured to slightly varying limits for producing holes to meet the establishe d classes of fit. No tap, however, is guaranteed to produce a thread of a given size.
In re-sharpening the cutting faces, or in refitting a regular tap with a different rake angle or hook for a special material, a cutter grinde r should be used. However, this operation can be performed by hand on a bench grinder if precautions are take n to properly shape the wheel.
Taps that become dull cut oversize; require more power to drive; cause rough threads or breakage, and generally slow the tapping operation. However, it is not alw ays profitable to re-sharpen taps unless the prope r tap grinding equipment is available.
The sketches below show wheel shapes for grinding in flutes.
Sharpening is usually restricted to the chamfer and must have great accuracy to minimize torque load, produce accurately sized holes, and promote longer life. For recommended length of chamfer and angles for taper, plug, and bottoming taps see page ____. In sharpe ning spiral pointe d taps, care must be exercised to maintain the original angle and shape of the spiral point. The spiral point flute should extend approximately 2 threads beyond the chamfer. When ends of lands become thin, grind end of tap straight back until lands are of normal thickness. It is good practice to refer to a new spiral pointed tap of the same size for guidance in sharpening. See sketch below.
Excessive breakage and other tap failures can usually be attribute d to: faulty tap holder, machine spindle, fixture, or work alignment; wrong tapping speed; wrong type or lack of lubricant; improperly designed tap for operation; peculiarities of the material being tapped; and condition of hole, finish and size.
FORMULA FOR OBTAINING TAP DRILL SIZES FOR CUTTING TAPS *Drilled Hole Size (inches)
=
Basic Major Dia. Of thread (Inch)
—
*Drilled Hole Size (mm)
=
Basic Major Dia. Of thread (mm)
—
Percentage of Full Thread____ No. of Threads pe r Inch
.0130 X
Percentage of Full Thre ad X mm Pitch 76.98
FORMULA FOR OBTAINING TAP DRILL SIZES FOR THREAD FORMING TAPS *Drilled Hole Size (inches)
=
Basic Major Dia. Of thread (Inch)
—
*Drilled Hole Size (mm)
=
Basic Major Dia. Of thread (mm)
—
Percentage of Full Thread____ No. of Threads pe r Inch
.0068 X
Percentage of Full Thre ad X mm Pitch 147.06
FORMULA FOR OBTAINING PERCENTAGE OF FULL THREAD FOR OTHER DRILL SIZES Percentage of Full Thread
=
No. of Threads per inch
X
Percentage of Full Thread
=
76.98__ Pitch (mm)
X
( (
) )
Basic Major Dia. __ Drill Hole of Thread (inch)___________________ Size (Inch) No. of Threads pe r Inch Basic Major Dia. (mm)
__
Drill Hole Size (mm)
Note: Drill size should be smaller than hole size by the probable amount the drill will cut oversize.
18
DECIMAL CHART DRILL DEC. TAP DRILL SIZE INCHES SIZE SIZE 97 .15mm 96 .16mm 95 .17mm 94 .18mm 93 .19mm 92 .2mm 91 .21mm 90 .22mm 89 .23mm .24mm 88 .25mm 87 .26mm 86 .27mm 85 .28mm .29mm 84 .3mm 83 82 .32mm 81 .34mm 80 35mm .36mm 79 .38mm 1/64 4mm 78 42mm 44mm 45mm 77 46mm 48mm 5mm 76 75 55mm 74 .6mm 73 72 65mm 71 7mm 70 69 75mm 68 1/32 8mm 67 66 85mm 65 9mm 64 63 95mm 62 61 1mm 60 59 1.05mm
.0059 .0059 .0063 .0063 .0067 .0067 .0071 .0071 .0075 .0075 .0079 .0079 .0083 .0083 .0087 .0087 .0091 .0091 .0094 .0095 .0098 .0100 .0102 .0105 .0106 .0110 .0110 .0114 .0115 .0118 .0120 .0125 .0126 .0130 .0134 .0135 .0138 .0142 .0145 .0150 .0156 .0157 .0160 .0165 .0173 .0177 .0180 .0181 .0189 .0197 .0200 .0210 .0217 .0225 .0236 .0240 .0250 .0256 .0260 .0276 .0280 .0292 .0295 .0310 .0312 .0315 .0320 .0330 .0335 .0350 .0354 .0360 .0370 .0374 .0380 .0390 .0394 .0400 .0410 .0413
-
58 57 1.1mm 1.15mm 56 3/64 1.2mm 1.25mm 1.3mm 55 1.35mm 54 1.4mm 1.45mm 1.5mm 53 1.55mm 1/16 1.6mm 52 1.65mm 1.7mm 51 1.75mm 50 1.8mm 1.85mm 49 1.9mm 48 1.95mm 5/64 47 2mm 2.05mm 46 45 2.1mm 2.15mm 44 2.2mm 2.25mm 43 2.3mm 2.35mm 42 3/32 2.4mm 41 2.45mm 40 2.5mm 39 38 2.6mm 37 2.7mm 36 2.75mm 7/64 35 2.8mm 34 33 2.9mm 32 3mm 31 3.1mm 1/8 3.2mm 3.25mm 30 3.3mm 3.4mm 29 3.5mm 28 9/64 3.6mm
DEC. INCHES .0420 .0430 .0433 .0453 .0465 .0469 .0472 .0492 .0512 .0520 .0531 .0550 .0551 .0571 .0591 .0595 .0610 .0625 .0630 .0635 .0650 .0669 .0670 .0689 .0700 .0709 .0728 .0730 .0748 .0760 .0768 .0781 .0785 .0787 .0807 .0810 .0820 .0827 .0846 .0860 .0866 .0886 .0890 .0906 .0925 .0935 .0938 .0945 .0960 .0965 .0980 .0984 .0995 .1015 .1024 .1040 .1063 .1065 .1083 .1094 .1100 .1102 .1110 .1130 .1142 .1160 .1181 .1200 .1220 .1250 .1260 .1280 .1285 .1299 .1339 .1360 .1378 .1405 .1406 .1417
TAP SIZE
DRILL SIZE
27 3.7mm 26 3.75mm 25 #0-80 3.8mm 24 m1.6x0.35 3.9mm 23 5/32 22 4mm 21 m1.8x0.35 20 4.1mm #1-64.72 4.2mm 19 4.25mm m2x0.4 4.3mm 18 11/64 17 #2-56 1 4.4mm m2.2x0.45 16 #2-64 1 4.5mm 15 4.6mm 14 m2.3x.04 13 4.7mm 4.75mm 3/16 #3-48 4.8mm 12 m2.5x0.45 11 4.9mm #3-56 10 9 m2.6x0.45 5mm #4-36 8 5.1mm 7 #4-40 13/64 6 5.2mm #4-48 5 5.25mm 5.3mm 4 5.4mm 3 m3x0.5 5.5mm 7/32 #5-40 5.6mm 2 #5-44 5.7mm 5.75mm #6-32 1 5.8mm 5.9mm A 15/64 6mm #6-40 B m3.5x0.6 6.1mm C 6.2mm D 6.25mm 5/32-32NS 6.3mm E 1/4 5/32-36NS 6.4mm m4x.07 6.5mm F #8-32 6.6mm G 6.7mm 17/64 6.75mm
DEC. INCHES .1440 .1457 .1470 .1476 .1495 .1496 .1520 .1535 .1540 .1562 .1570 .1575 .1590 .1610 .1614 .1654 .1660 .1673 .1693 .1695 .1719 .1730 .1732 .1770 .1772 .1800 .1811 .1820 .1850 .1850 .1870 .1875 .1890 .1890 .1910 .1929 .1935 .1960 .1969 .1990 .2008 .2010 .2031 .2040 .2047 .2055 .2067 .2087 .2090 .2126 .2130 .2165 .2188 .2205 .2210 .2244 .2264 .2280 .2283 .2323 .2340 .2344 .2362 .2380 .2402 .2420 .2441 .2460 .2461 .2480 .2500 .2500 .2520 .2559 .2570 .2598 .2610 .2638 .2656 .2657
TAP SIZE
DRILL SIZE
H 6.8mm 3/16-24NS 6.9mm m4.5x0.75 I #10-24 7mm J 7.1mm K 9/32 7.2mm 3/16-32NS 7.25mm 7.3mm #10-32 L 7.4mm M m5x0.8 7.5mm 19/64 7.6mm N 7.7mm 7.75mm 7.8mm 7.9mm #12-24 5/16 8mm O 8.1mm #12-28 8.2mm P 8.25mm 8.3mm 21/64 8.4mm 7/32-32NS Q 8.5mm 8.6mm R 8.7mm m6x1 11/32 8.75mm 8.8mm 1/4-20 S 8.9mm 9mm T 9.1mm m6x0.75 23/64 9.2mm 1/4-24 9.25mm 9.3mm 1/4-28 U 9.4mm 9.5mm 3/8 V 9.6mm 1 9.7mm 9.75mm 8 9.8mm W 9.9mm 25/64 m7x1 10mm X Y 13/32 Z 10.5mm 1/16-27NPT PIPE 27/64 11mm 1/16-27 NPS PIPE 7/16 11.5mm 29/64 15/32 5/16-18NC 12mm 31/64 12.5mm 1/2 13mm m8x1.25 33/64
DEC. INCHES .2660 .2677 .2717 .2720 .2756 .2770 .2795 .2810 .2812 .2835 .2854 .2874 .2900 .2913 .2950 .2953 .2969 .2992 .3020 .3031 .3051 .3071 .3110 .3125 .3150 .3160 .3189 .3228 .3230 .3248 .3268 .3281 .3307 .3320 .3346 .3386 .3390 .3425 .3438 .3445 .3465 .3480 .3504 .3543 .3580 .3583 .3594 .3622 .3642 .3661 .3680 .3701 .3740 .3750 .3770 .3780 .3819 .3839 .3858 .3860 .3898 .3906 .3937 .3970 .4040 .4062 .4130 .4134 .4219 .4331 .4375 .4528 .4531 .4688 .4724 .4844 .4921 .5000 .5118 .5156
TAP SIZE
DRILL DEC. SIZE INCHES
17/32 13.5mm 35/64 5/16-24NF 14mm m8x1 9/16 14.5mm 37/64 15mm 5/16-32NS 19/32 39/64 15.5mm 5/8 16mm 41/64 16.5mm 21/32 17mm 43/64 11/16 17.5mm m9x1.25 45/64 18mm 23/32 3/8-16NC 18.5 47/64 19mm 3/4 49/64 19.5mm 25/32 20mm 51/64 20.5mm 3/8-24NF 13/16 m10x1.5 21mm 53/64 1/8-27NPT PIPE 27/32 21.5mm 55/64 m10x1.25 22mm 7/8 1/8-27NPT PIPE 22.25m 22.5mm m10x1.00 57/64 23mm 29/32 59/64 23.5mm 15/16 24mm 7/16-14NC 61/64 24.5mm m11x1.50 31/32 25mm 8 63/64 1 25.5mm 1-1/64 9 26mm 1-1/32 26.5mm 7/16-20 1-3/64 m12x1.75 1-1/16 27mm 1-5/64 27.5mm 1 1-3/32 m12x1.25 28mm 1/2-13 1-7/64 28.5mm 1/4-18NPT PIPE 1-1/8 1-9/64 NPS 1/4-18 PIPE 1/2-20 29mm 1-5/32 m14x2 29.5mm 9/16-12 1-11/64 m14x1.5
.5312 .5315 .5469 .5512 .5625 .5709 .5781 .5906 .5938 .6094 .6102 .6250 .6299 .6406 .6496 .6562 .6693 .6719 .6875 .6890 .7031 .7087 .7188 .7283 .7344 .7480 .7500 .7656 .7677 .7812 .7874 .7969 .8071 .8125 .8268 .8281 .8438 .8465 .8594 .8661 .8750 .8760 .8858 .8906 .9055 .9062 .9219 .9252 .9375 .9449 .9531 .9646 .9688 .9843 .9844 1.0000 1.0039 1.0156 1.0236 1.0312 1.0433 1.0469 1.0625 1.0630 1.0781 1.0827 1.0938 1.1024 1.1094 1.1220 1.1250 1.1406 1.1417 1.1562 1.1614 1.1719
TAP SIZE 5/8-11 m16x2 m16x1.5 3/8-1 8NPT 5/8-1 8NF 3/8-18 NPS PIPE m18x2.5 11/16-16NS m18x2.0 3/4-10NC 3/4-16NF m20x2.5 m20x2.0 1/2-14NPT PIPE m20x1.5 1/2-14NPS PIPE
7/8-9NC m22x2.5 m22x2.0 m22x1.5 7/8-14NF m24x3
m24x2 1-8NC m24x1.50
3/4-14NPT PIPE 3/4-14 NPS 1-14 NF m27x3
m27x2 1-1/8-7NC
m30x3.5 1-1/8-12NF
m30x2.0 1-1/4-7NC
1-111/2NPT PIPE 1-1/4-12NF
m14x1.25 9/16-18
19