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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 | 0.204" | 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 | UNS | 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 | UNS | 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 |
Long-Reach Chip-Clearing Taps for Through Holes
Clear chips while tapping deep and hard-to-reach holes. These taps have an extra-long shank for extended reach. Also known as gun taps, their spiral-point flutes push chips ahead of the tap and out of through holes. They don't need to be reversed to prevent buildup, so they produce threads more efficiently than standard taps and are suitable for production work. Their square shank is compatible with tap wrenches and tap holders for drill presses and milling machines. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping.
Uncoated high-speed steel taps are for use on most metal and plastic.
Black-oxide cobalt steel taps have high cutting strength and a long life when used on metals such as steel, stainless steel, and cast iron.
For technical drawings and 3-D models, click on a part number.
Inch
Thread | Drill Bit | Plug Chamfer | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Thread Type | Pitch Dia. Limit | Shank Diameter | Each | |
Black Oxide Cobalt Steel | ||||||||||
| 2-56 | 7/16" | 6" | 51 ga. | 0.067" | 2 | UNC | H2 | 0.141" | 0000000 | 0000000 |
| 4-40 | 9/16" | 6" | 43 ga. | 0.089" | 2 | UNC | H2 | 0.141" | 0000000 | 00000 |
| 6-32 | 3/8" | 6" | 36 ga. | 0.1065" | 2 | UNC | H3 | 0.168" | 0000000 | 00000 |
| 8-32 | 3/8" | 6" | 29 ga. | 0.136" | 2 | UNC | H3 | 0.168" | 0000000 | 00000 |
| 10-24 | 1/2" | 6" | 25 ga. | 0.1495" | 2 | UNC | H3 | 0.194" | 0000000 | 00000 |
| 10-32 | 1/2" | 6" | 21 ga. | 0.159" | 2 | UNF | H3 | 0.194" | 0000000 | 00000 |
| 1/4"-20 | 5/8" | 6" | 7 ga. | 0.201" | 3 | UNC | H3 | 0.255" | 0000000 | 00000 |
| 1/4"-28 | 5/8" | 6" | 3 ga. | 0.213" | 3 | UNF | H3 | 0.255" | 0000000 | 00000 |
| 5/16"-18 | 11/16" | 6" | F | 0.257" | 3 | UNC | H3 | 0.318" | 0000000 | 00000 |
| 5/16"-24 | 11/16" | 6" | I | 0.272" | 3 | UNF | H3 | 0.318" | 0000000 | 00000 |
| 3/8"-16 | 3/4" | 6" | 5/16" | 0.3125" | 3 | UNC | H3 | 0.381" | 0000000 | 00000 |
| 3/8"-24 | 3/4" | 6" | Q | 0.332" | 3 | UNF | H3 | 0.381" | 0000000 | 00000 |
| 7/16"-14 | 7/8" | 6" | U | 0.368" | 3 | UNC | H3 | 0.323" | 0000000 | 00000 |
| 7/16"-20 | 7/8" | 6" | 25/64" | 0.3906" | 3 | UNF | H3 | 0.323" | 0000000 | 00000 |
| 1/2"-13 | 15/16" | 6" | 27/64" | 0.4219" | 3 | UNC | H3 | 0.367" | 0000000 | 00000 |
| 1/2"-20 | 15/16" | 6" | 29/64" | 0.4531" | 3 | UNF | H3 | 0.367" | 0000000 | 00000 |
| 5/8"-11 | 1 3/32" | 6" | 17/32" | 0.5313" | 3 | UNC | H3 | 0.48" | 0000000 | 000000 |
Metric
Thread | Drill Bit | Plug Chamfer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Thread Pitch, mm | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Thread Type | Pitch Dia. Limit | Shank Diameter | Each | |
Uncoated High-Speed Steel | |||||||||||
| M3.5 | 0.6 | 11/16" | 6" | No. 32 | 0.116" | 2 | Metric | D4 | 0.141" | 0000000 | 000000 |
| M4 | 0.7 | 3/4" | 6" | 3.3 mm | 0.1299" | 2 | Metric | D4 | 0.168" | 0000000 | 00000 |
| M5 | 0.8 | 7/8" | 6" | 4.3 mm | 0.1692" | 2 | Metric | D4 | 0.194" | 0000000 | 00000 |
| M6 | 1 | 1" | 6" | 5.1 mm | 0.2007" | 2 | Metric | D5 | 0.255" | 0000000 | 00000 |
| M8 | 1.25 | 1 1/8" | 6" | 6.9 mm | 0.2716" | 2 | Metric | D5 | 0.318" | 0000000 | 00000 |
| M10 | 1.5 | 1 1/4" | 6" | R | 0.339" | 3 | Metric | D6 | 0.381" | 0000000 | 00000 |
| M12 | 1.75 | 1 21/32" | 6" | 13/32" | 0.4063" | 3 | Metric | D6 | 0.367" | 0000000 | 00000 |
| M16 | 2 | 1 13/16" | 6" | 14 mm | 0.5512" | 3 | Metric | D7 | 0.48" | 0000000 | 00000 |
Long-Reach Pipe and Conduit Thread Taps
Plug Chamfer
Bottoming Chamfer
With an extra-long shank, these taps have extended reach for tapping deep and hard-to-reach areas in pipe and conduit. They're made of high-speed steel and are for use on most metal and plastic. The square shank is compatible with tap wrenches and tap holders for drill presses and milling machines.
Plug-chamfer taps are a versatile choice for most tapping applications. With 3-5 chamfered cutting threads, they require moderate torque and are often used for start-to-finish tapping of through holes and closed-end holes. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.
Bottoming-chamfer taps cut into the workpiece with just 1-2 chamfered threads. This short chamfer lets them thread holes closer to the bottom than other taps, but they require more torque to start threads.
For technical drawings and 3-D models, click on a part number.
Drill Bit | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Threads Per Inch | Thread Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Each | |
Plug Chamfer | |||||||||
Uncoated High-Speed Steel | |||||||||
| 1/8 | NPT | 27 | 3/4" | 6" | Q | 0.332" | 4 | 0000000 | 000000 |
| 1/8 | NPTF | 27 | 3/4" | 6" | Q | 0.332" | 4 | 0000000 | 00000 |
| 1/4 | NPT | 18 | 1 1/16" | 6" | 7/16" | 0.4375" | 4 | 0000000 | 00000 |
| 1/4 | NPTF | 18 | 1 1/16" | 6" | 7/16" | 0.4375" | 4 | 0000000 | 00000 |
| 3/8 | NPT | 18 | 1 1/16" | 6" | 9/16" | 0.5625" | 4 | 0000000 | 00000 |
| 3/8 | NPTF | 18 | 1 1/16" | 6" | 9/16" | 0.5625" | 4 | 0000000 | 00000 |
| 1/2 | NPT | 14 | 1 3/8" | 6" | 45/64" | 0.7031" | 4 | 0000000 | 00000 |
| 1/2 | NPTF | 14 | 1 3/8" | 6" | 45/64" | 0.7031" | 4 | 0000000 | 00000 |
| 3/4 | NPT | 14 | 1 3/8" | 6" | 29/32" | 0.9063" | 5 | 0000000 | 000000 |
| 3/4 | NPTF | 14 | 1 3/8" | 6" | 29/32" | 0.9063" | 5 | 0000000 | 000000 |
Bottoming Chamfer | |||||||||
Uncoated High-Speed Steel | |||||||||
| 3 | NPT | 8 | 2 5/8" | 6" | 3 15/64" | 3.2344" | 7 | 0000000 | 000000 |
| 3 | NPTF | 8 | 2 5/8" | 6" | 3 15/64" | 3.2344" | 7 | 0000000 | 000000 |
Tap Extensions
Extension
Extension
with
Knurled Ring
with
Knurled Ring
Extend the length of your tap to access hard-to-reach areas. These extensions are for use with tap wrenches and tap holders for drill presses and milling machines.
Extensions with a knurled ring adjust to fit a broader range of tap sizes than other extensions.
Extensions with an included hex key have a close-fitting deep socket and two set screws to hold the tap securely in place.
| For Tap Size | For Square Shank Size | Lg. | Max. Overall Dia. | Material | Includes | Each | |
Extension | |||||||
|---|---|---|---|---|---|---|---|
| No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, 1/16", 1/8", M1.6, M1.8, M2, M2.2, M2.5, M3, M3.5 | 0.191" | 8" | 0.312" | Steel | Hex Key | 0000000 | 000000 |
| No. 8, M4, 5/32" | 0.191" | 8" | 3/8" | Steel | Hex Key | 0000000 | 00000 |
| No. 10, 3/16", M4.5, M5 | 0.191" | 8" | 3/8" | Steel | Hex Key | 0000000 | 00000 |
| No. 12, 7/32", M5.5 | 0.164" | 8" | 0.437" | Steel | Hex Key | 0000000 | 00000 |
| No. 14, 1/4", M6, M6.3 | 0.191" | 8" | 0.437" | Steel | Hex Key | 0000000 | 00000 |
| 5/16", M7, M8 | 0.237" | 8" | 1/2" | Steel | Hex Key | 0000000 | 00000 |
| 3/8", M10 | 0.285" | 8" | 5/8" | Steel | Hex Key | 0000000 | 00000 |
| 7/16", M11 | 0.241" | 8" | 5/8" | Steel | Hex Key | 0000000 | 00000 |
| 1/2", M12, M12.5 | 0.274" | 8" | 5/8" | Steel | Hex Key | 0000000 | 00000 |
| 5/8", M16 | 0.359" | 8" | 3/4" | Steel | Hex Key | 0000000 | 00000 |
| 3/4" | 0.441" | 8" | 7/8" | Steel | Hex Key | 0000000 | 000000 |
| 9/16", M14 | 0.32" | 8" | 0.687" | Steel | Hex Key | 0000000 | 00000 |
Extension with Knurled Ring | |||||||
| No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/16", 1/8", 3/16", 7/32", M1.6, M1.8, M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5 | 0.11"-0.191" | 7" | 0.852" | Steel | __ | 0000000 | 00000 |
| No. 12, No. 14, 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5 | 0.191"-0.275" | 10 3/4" | 1 1/16" | Steel | __ | 0000000 | 00000 |
Tap Extension Sets
Connect these extensions to your tap for greater access to hard-to-reach areas. Sets include nine extensions to fit different tap sizes. They're compatible with tap wrenches and tap holders for drill presses and milling machines.
| No. of Extensions | Includes | For Square Shank Size | Material | Each | |
| 9 | 8" Long Extension for 1/2", 12 mm, and 12.5 mm Tap Sizes 8" Long Extension for 3/8" and 10 mm Tap Sizes 8" Long Extension for 5/16", 7 mm, and 8 mm Tap Sizes 8" Long Extension for 7/16" and 11 mm Tap Sizes 8" Long Extension for No. 10, 3/16", 4.5 mm, and 5 mm Tap Sizes 8" Long Extension for No. 12, 7/32", and 5.5 mm Tap Sizes 8" Long Extension for No. 14, 1/4", 6 mm, and 6.3 mm Tap Sizes 8" Long Extension for No. 8, 5/32", and 4 mm Tap Sizes 8" Long Extension for Nos. 0-6, 1/16"-1/8", and 1.6-3.5 mm Tap Sizes Three Hex Keys | 0.164", 0.191", 0.237", 0.241", 0.274", 0.285" | Steel | 0000000 | 0000000 |