Thread Size Thread Size |
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Maximum Tapping Depth Maximum Tapping Depth |
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Application Application |
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Shank Diameter Shank Diameter |
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Thread Length Thread Length |
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Drill Bit Size Drill Bit Size |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Drill Bit Decimal Size Equivalent Drill Bit DecimalSize Equivalent |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Long-Reach General Purpose Taps
Bottoming Chamfer
Plug Chamfer
Taper Chamfer
Use the extra-long shank to thread deep and hard-to-reach holes. These taps are made of uncoated high-speed steel and are for use on most metal and plastic. With a square shank, they're compatible with tap wrenches and tap holders for drill presses and milling machines. All have a chamfer with chamfered cutting threads, so they're suitable for start-to-finish tapping. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.
For technical drawings and 3-D models, click on a part number.
Inch
Thread | Drill Bit | Shank | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Thread Type | Pitch Dia. Limit | Dia. | Dia. Tolerance | Each | |
Bottoming Chamfer | |||||||||||
Uncoated High-Speed Steel | |||||||||||
| 6-32 | 11/16" | 6" | 7/64" | 0.1094" | 3 | UNC | H3 | 0.141" | -0.0313" to 0.0313" | 00000000 | 000000 |
| 8-32 | 3/4" | 6" | No. 29 | 0.136" | 4 | UNC | H3 | 0.168" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 10-24 | 7/8" | 6" | No. 24 | 0.152" | 4 | UNC | H3 | 0.194" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 10-32 | 7/8" | 6" | No. 20 | 0.161" | 4 | UNF | H3 | 0.194" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 1/4"-20 | 1" | 6" | No. 6 | 0.24" | 4 | UNC | H3 | 0.255" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 1/4"-28 | 1" | 6" | 7/32" | 0.2188" | 4 | UNF | H3 | 0.255" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 5/16"-18 | 1 1/8" | 6" | G | 0.261" | 4 | UNC | H3 | 0.318" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 5/16"-18 | 1 1/8" | 8" | F | 0.257" | 4 | UNC | H3 | 0.318" | -0.031" to 0.031" | 00000000 | 00000 |
| 5/16"-24 | 1 1/8" | 6" | 7 mm | 0.2756" | 4 | UNF | H3 | 0.318" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 3/8"-16 | 1 1/4" | 6" | 8.1 mm | 0.3188" | 4 | UNC | H3 | 0.381" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 3/8"-16 | 1 1/4" | 8" | 5/16" | 0.3125" | 4 | UNC | H3 | 0.381" | -0.031" to 0.031" | 00000000 | 00000 |
| 3/8"-24 | 1 1/4" | 6" | 8.6 mm | 0.3385" | 4 | UNF | H3 | 0.381" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 7/16"-14 | 1 7/16" | 6" | 9.5 mm | 0.374" | 4 | UNC | H3 | 0.323" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 7/16"-20 | 1 7/16" | 6" | 25/64" | 0.3906" | 4 | UNF | H3 | 0.323" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 1/2"-13 | 1 21/32" | 6" | 11 mm | 0.4331" | 4 | UNC | H3 | 0.367" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 9/16"-12 | 1 21/32" | 6" | 12.2 mm | 0.4803" | 4 | UNC | H3 | 0.429" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 9/16"-18 | 1 21/32" | 6" | 13 mm | 0.5118" | 4 | UNF | H3 | 0.429" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 5/8"-18 | 1 13/32" | 6" | 37/64" | 0.5781" | 4 | UNF | H3 | 0.48" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 3/4"-10 | 2" | 6" | 21/32" | 0.6563" | 4 | UNC | H3 | 0.59" | -0.0313" to 0.0313" | 00000000 | 00000 |
Plug Chamfer | |||||||||||
Uncoated High-Speed Steel | |||||||||||
| 6-32 | 11/16" | 6" | 36 ga. | 0.1065" | 3 | UNC | H3 | 0.141" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 8-32 | 3/4" | 6" | 29 ga. | 0.136" | 4 | UNC | H3 | 0.168" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 10-24 | 7/8" | 6" | 25 ga. | 0.1495" | 4 | UNC | H3 | 0.194" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 10-32 | 7/8" | 6" | 21 ga. | 0.159" | 4 | UNF | H3 | 0.194" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 1/4"-20 | 1" | 6" | 7 ga. | 0.201" | 4 | UNC | H3 | 0.255" | -0.031" to 0.031" | 0000000 | 00000 |
| 1/4"-20 | 1 5/8" | 5" | 7 ga. | 0.201" | 4 | UNC | H3 | 0.185" | -0.003" to 0" | 0000000 | 00000 |
| 1/4"-28 | 1" | 6" | 3 ga. | 0.213" | 4 | UNF | H3 | 0.255" | -0.031" to 0.031" | 0000000 | 00000 |
| 1/4"-28 | 1 1/4" | 5" | 7/32" | 0.2188" | 4 | UNF | H3 | 0.185" | -0.003" to 0" | 00000000 | 00000 |
| 5/16"-18 | 1 1/8" | 6" | F | 0.257" | 4 | UNC | H3 | 0.318" | -0.031" to 0.031" | 0000000 | 00000 |
| 5/16"-18 | 1 1/8" | 8" | F | 0.257" | 4 | UNC | H3 | 0.318" | -0.031" to 0.031" | 00000000 | 00000 |
| 5/16"-18 | 1 13/16" | 5 1/2" | F | 0.257" | 4 | UNC | H3 | 0.24" | -0.003" to 0" | 0000000 | 00000 |
| 5/16"-24 | 1 1/8" | 6" | I | 0.272" | 4 | UNF | H3 | 0.318" | -0.031" to 0.031" | 0000000 | 00000 |
| 3/8"-16 | 1 1/4" | 6" | 5/16" | 0.3125" | 4 | UNC | H3 | 0.381" | -0.031" to 0.031" | 0000000 | 00000 |
| 3/8"-16 | 1 1/4" | 8" | 5/16" | 0.3125" | 4 | UNC | H3 | 0.381" | -0.031" to 0.031" | 00000000 | 00000 |
| 3/8"-16 | 2" | 6" | 5/16" | 0.3125" | 4 | UNC | H3 | 0.294" | -0.003" to 0" | 0000000 | 00000 |
| 3/8"-24 | 1 1/4" | 6" | Q | 0.332" | 4 | UNF | H3 | 0.381" | -0.031" to 0.031" | 0000000 | 00000 |
| 7/16"-14 | 1 7/16" | 6" | U | 0.368" | 4 | UNC | H3 | 0.323" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 7/16"-20 | 1 7/16" | 6" | 25/64" | 0.3906" | 4 | UNF | H3 | 0.323" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 1/2"-13 | 1 21/32" | 6" | 27/64" | 0.4219" | 4 | UNC | H3 | 0.367" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 1/2"-13 | 2 1/2" | 7" | 27/64" | 0.4219" | 4 | UNC | H3 | 0.4" | -0.003" to 0" | 0000000 | 000000 |
| 1/2"-20 | 1 21/32" | 6" | 29/64" | 0.4531" | 4 | UNF | H3 | 0.367" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 9/16"-12 | 1 21/32" | 6" | 15/32" | 0.4688" | 4 | UNC | H3 | 0.429" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 9/16"-18 | 1 21/32" | 6" | 13 mm | 0.5118" | 4 | UNF | H3 | 0.429" | -0.0313" to 0.0313" | 00000000 | 00000 |
| 5/8"-11 | 1 13/16" | 6" | 17/32" | 0.5313" | 4 | UNC | H3 | 0.48" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 5/8"-11 | 3" | 8" | 17/32" | 0.5313" | 4 | UNC | H3 | 0.503" | -0.003" to 0" | 0000000 | 000000 |
| 5/8"-18 | 1 13/16" | 6" | 37/64" | 0.5781" | 4 | UNF | H3 | 0.48" | -0.0313" to 0.0313" | 0000000 | 00000 |
| 3/4"-10 | 3 1/4" | 9" | 21/32" | 0.6563" | 4 | UNC | H3 | 0.616" | -0.003" to 0" | 0000000 | 000000 |
| 3/4"-16 | 2 1/2" | 9" | 11/16" | 0.6875" | 4 | UNF | H3 | 0.616" | -0.003" to 0" | 00000000 | 000000 |
| 7/8"-9 | 3 5/8" | 10" | 49/64" | 0.7656" | 4 | UNC | H4 | 0.727" | -0.003" to 0" | 00000000 | 000000 |
| 7/8"-14 | 2 3/4" | 10" | 13/16" | 0.8125" | 4 | UNF | H4 | 0.727" | -0.003" to 0" | 00000000 | 000000 |
| 1"-8 | 4" | 11" | 7/8" | 0.875" | 4 | UNC | H4 | 0.834" | -0.003" to 0" | 0000000 | 000000 |
| 1"-14 | 3" | 11" | 23.5 mm | 0.9274" | 4 | UNF | H4 | 0.834" | -0.003" to 0" | 00000000 | 000000 |
Taper Chamfer | |||||||||||
Uncoated High-Speed Steel | |||||||||||
| 6-32 | 11/16" | 6" | 7/64" | 0.1094" | 3 | UNC | H3 | 0.141" | -0.0015" to 0" | 00000000 | 00000 |
| 8-32 | 3/4" | 6" | No. 29 | 0.136" | 4 | UNC | H3 | 0.168" | -0.0015" to 0" | 00000000 | 00000 |
| 10-24 | 7/8" | 6" | No. 24 | 0.152" | 4 | UNC | H3 | 0.194" | -0.0015" to 0" | 00000000 | 00000 |
| 10-32 | 7/8" | 6" | No. 20 | 0.161" | 4 | UNF | H3 | 0.194" | -0.0015" to 0" | 00000000 | 00000 |
| 1/4"-20 | 1 5/8" | 5" | 7 ga. | 0.201" | 4 | UNC | H3 | 0.185" | -0.003" to 0" | 00000000 | 00000 |
| 1/4"-28 | 1" | 6" | 5.5 mm | 0.2164" | 4 | UNF | H3 | 0.255" | -0.0015" to 0" | 00000000 | 00000 |
| 1/4"-28 | 1 1/4" | 5" | 7/32" | 0.2188" | 4 | UNF | H3 | 0.185" | -0.003" to 0" | 00000000 | 00000 |
| 5/16"-18 | 1 13/16" | 5 1/2" | F | 0.257" | 4 | UNC | H3 | 0.24" | -0.003" to 0" | 00000000 | 00000 |
| 5/16"-24 | 1 1/8" | 6" | 7 mm | 0.2756" | 4 | UNF | H3 | 0.318" | -0.0015" to 0" | 00000000 | 00000 |
| 3/8"-16 | 2" | 6" | 5/16" | 0.3125" | 4 | UNC | H3 | 0.294" | -0.003" to 0" | 00000000 | 00000 |
| 3/8"-24 | 1 1/4" | 6" | 8.6 mm | 0.3385" | 4 | UNF | H3 | 0.381" | -0.0015" to 0" | 00000000 | 00000 |
| 1/2"-13 | 2 1/2" | 7" | 27/64" | 0.4219" | 4 | UNC | H3 | 0.4" | -0.003" to 0" | 00000000 | 000000 |
| 1/2"-20 | 1 7/8" | 7" | 29/64" | 0.4531" | 4 | UNF | H3 | 0.4" | -0.003" to 0" | 00000000 | 000000 |
| 9/16"-12 | 1 21/32" | 6" | 31/64" | 0.4844" | 4 | UNC | H3 | 0.429" | -0.0015" to 0" | 00000000 | 00000 |
| 9/16"-18 | 1 21/32" | 6" | 13 mm | 0.5118" | 4 | UNF | H3 | 0.429" | -0.0015" to 0" | 00000000 | 00000 |
| 5/8"-11 | 3" | 8" | 17/32" | 0.5313" | 4 | UNC | H3 | 0.503" | -0.003" to 0" | 00000000 | 000000 |
| 5/8"-18 | 2 1/4" | 8" | 9/16" | 0.5687" | 4 | UNF | H3 | 0.503" | -0.003" to 0" | 00000000 | 000000 |
| 3/4"-10 | 3 1/4" | 9" | 21/32" | 0.6563" | 4 | UNC | H3 | 0.616" | -0.003" to 0" | 00000000 | 000000 |
| 3/4"-16 | 2 1/2" | 9" | 11/16" | 0.6875" | 4 | UNF | H3 | 0.616" | -0.003" to 0" | 00000000 | 000000 |
| 7/8"-9 | 3 5/8" | 10" | 49/64" | 0.7656" | 4 | UNC | H4 | 0.727" | -0.003" to 0" | 00000000 | 000000 |
| 1"-8 | 4" | 11" | 7/8" | 0.875" | 4 | UNC | H4 | 0.834" | -0.003" to 0" | 00000000 | 000000 |
| 1"-14 | 3" | 11" | 23.5 mm | 0.9274" | 4 | UNF | H4 | 0.834" | -0.003" to 0" | 00000000 | 000000 |
Metric
Thread | Drill Bit | Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Thread Type | Pitch Dia. Limit | Dia. | Dia. Tolerance | Each | |
Bottoming Chamfer | ||||||||||||
Uncoated High-Speed Steel | ||||||||||||
| M3.5 | 0.6 | 11/16" | 6" | No. 32 | 0.116" | 3 | Metric | D4 | 0.141" | -0.0313" to 0.0313" | 00000000 | 000000 |
| M4 | 0.7 | 3/4" | 6" | 3.4 mm | 0.1338" | 4 | Metric | D4 | 0.168" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M5 | 0.8 | 7/8" | 6" | 4.3 mm | 0.1692" | 4 | Metric | D4 | 0.194" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M6 | 1 | 1" | 6" | 5.1 mm | 0.2007" | 4 | Metric | D5 | 0.255" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M8 | 1.25 | 1 1/8" | 6" | 6.9 mm | 0.2716" | 4 | Metric | D5 | 0.318" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M10 | 1.5 | 1 7/16" | 6" | R | 0.339" | 4 | Metric | D6 | 0.323" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M12 | 1.75 | 1 21/32" | 6" | Z | 0.413" | 4 | Metric | D6 | 0.367" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M16 | 2 | 1 13/32" | 6" | 14 mm | 0.5512" | 4 | Metric | D7 | 0.48" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M20 | 2.5 | 2" | 6" | 45/64" | 0.7031" | 4 | Metric | D7 | 0.652" | -0.0313" to 0.0313" | 00000000 | 00000 |
Plug Chamfer | ||||||||||||
Uncoated High-Speed Steel | ||||||||||||
| M3.5 | 0.6 | 11/16" | 6" | No. 32 | 0.116" | 3 | Metric | D4 | 0.141" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M4 | 0.7 | 3/4" | 6" | 3.4 mm | 0.1338" | 4 | Metric | D4 | 0.168" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M4.5 | 0.75 | 7/8" | 6" | 3.8 mm | 0.1535" | 4 | Metric | D4 | 0.194" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M5 | 0.8 | 7/8" | 6" | No. 18 | 0.1695" | 4 | Metric | D4 | 0.194" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M6 | 1 | 1" | 6" | No. 7 | 0.201" | 4 | Metric | D5 | 0.255" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M7 | 1 | 1 1/8" | 6" | 6.1 mm | 0.2401" | 4 | Metric | D5 | 0.318" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M8 | 1.25 | 1 1/8" | 6" | 6.9 mm | 0.2716" | 4 | Metric | D5 | 0.318" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M10 | 1.5 | 1 7/16" | 6" | R | 0.339" | 4 | Metric | D6 | 0.323" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M12 | 1 | 1 21/32" | 6" | 7/16" | 0.4375" | 4 | Metric | D6 | 0.367" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M12 | 1.75 | 1 21/32" | 6" | 13/32" | 0.4063" | 4 | Metric | D6 | 0.367" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M14 | 2 | 1 21/32" | 6" | 12.2 mm | 0.4803" | 4 | Metric | D7 | 0.429" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M16 | 2 | 1 13/32" | 6" | 14 mm | 0.5512" | 4 | Metric | D7 | 0.48" | -0.0313" to 0.0313" | 00000000 | 00000 |
| M20 | 2.5 | 2" | 6" | 45/64" | 0.7031" | 4 | Metric | D7 | 0.652" | -0.0313" to 0.0313" | 00000000 | 00000 |
Taper Chamfer | ||||||||||||
Uncoated High-Speed Steel | ||||||||||||
| M5 | 0.8 | 7/8" | 6" | 4.3 mm | 0.1692" | 4 | Metric | D4 | 0.194" | -0.0015" to 0" | 00000000 | 00000 |
| M6 | 1 | 1" | 6" | 5.1 mm | 0.2007" | 4 | Metric | D5 | 0.255" | -0.0015" to 0" | 00000000 | 00000 |
| M7 | 1 | 1 1/8" | 6" | 6.1 mm | 0.2401" | 4 | Metric | D5 | 0.318" | -0.0015" to 0" | 00000000 | 00000 |
| M8 | 1.25 | 1 1/8" | 6" | 6.9 mm | 0.2716" | 4 | Metric | D5 | 0.318" | -0.0015" to 0" | 00000000 | 00000 |
| M10 | 1.5 | 1 7/16" | 6" | R | 0.339" | 4 | Metric | D6 | 0.323" | -0.0015" to 0" | 00000000 | 00000 |
| M12 | 1.75 | 1 21/32" | 6" | Z | 0.413" | 4 | Metric | D6 | 0.367" | -0.0015" to 0" | 00000000 | 00000 |