Thread Size Thread Size |
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For Use On For Use On | Show |
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For Use On For Use On | Hide |
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Flute Type Flute Type |
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![]() | Straight |
![]() | Spiral Point |
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Material Material |
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Overall Length Overall Length |
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Thread Direction Thread Direction |
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Right Hand | Left Hand |
Individual/Set Individual/Set |
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Maximum Tapping Depth Maximum Tapping Depth |
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Thread Length Thread Length |
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Application Application |
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Finish Finish |
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Number of Tapping Ends Number of Tapping Ends |
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Drill Bit Decimal Size Equivalent Drill Bit DecimalSize Equivalent |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Carbide Taps



These taps are solid carbide with an aluminum-titanium-nitride (AlTiN) coating for high strength and excellent wear resistance. Use them on hard and abrasive material, such as heat-treated metal, nickel, and fiberglass. The extreme hardness of carbide taps means they are brittle, so they’re not recommended for hand tapping. A highly rigid setup, such as a CNC machine, is necessary to prevent the tap from breaking.
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.
Thread | Drill Bit | Plug Chamfer | Bottoming Chamfer | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Size | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Thread Type | Pitch Dia. Limit | Each | Each | ||
Titanium Aluminum Nitride (TiAlN) Coated Carbide | |||||||||||
0-80 | 9/32" | 1 5/8" | 3/64" | 0.0469" | 2 | __ | H2 | 0000000 | 000000 | 000000 | 00 |
2-56 | 7/16" | 1 3/4" | 51 ga. | 0.067" | 2 | __ | H2 | 0000000 | 00000 | 0000000 | 000000 |
4-40 | 5/16" | 1 7/8" | 3/32" | 0.088" | 2 | UNC | H2 | 0000000 | 00000 | 0000000 | 00000 |
6-32 | 3/8" | 2" | 7/64" | 0.108" | 3 | UNC | H3 | 0000000 | 00000 | 0000000 | 00000 |
8-32 | 3/8" | 2 1/8" | 9/64" | 0.134" | 4 | UNC | H3 | 0000000 | 00000 | 0000000 | 00000 |
10-24 | 1/2" | 2 3/8" | 5/32" | 0.149" | 4 | UNC | H3 | 0000000 | 00000 | 0000000 | 00000 |
10-32 | 1/2" | 2 3/8" | 5/32" | 0.16" | 4 | UNF | H3 | 0000000 | 00000 | 0000000 | 00000 |
1/4"-20 | 5/8" | 2 1/2" | 13/64" | 0.202" | 4 | UNC | H3 | 0000000 | 00000 | 0000000 | 00000 |
1/4"-28 | 5/8" | 2 1/2" | 3 ga. | 0.213" | 4 | __ | H3 | 0000000 | 000000 | 0000000 | 000000 |
5/16"-18 | 11/16" | 2 23/32" | 17/64" | 0.259" | 4 | UNC | H3 | 0000000 | 000000 | 0000000 | 000000 |
3/8"-16 | 3/4" | 2 15/16" | 5/16" | 0.314" | 4 | UNC | H3 | 0000000 | 000000 | 0000000 | 000000 |
1/2"-13 | 15/16" | 3 3/8" | 27/64" | 0.425" | 4 | UNC | H3 | 0000000 | 000000 | 0000000 | 000000 |
9/16"-12 | 1" | 3 19/32" | 31/64" | 0.4844" | 4 | __ | H3 | 0000000 | 000000 | 000000 | 00 |
5/8"-11 | 1 1/16" | 3 13/16" | 17/32" | 0.5313" | 4 | __ | H3 | 0000000 | 000000 | 0000000 | 000000 |
3/4"-10 | 1 7/32" | 4 1/4" | 21/32" | 0.6563" | 4 | __ | H3 | 0000000 | 000000 | 0000000 | 000000 |
3/4"-16 | 1 7/32" | 4 1/4" | 11/16" | 0.6875" | 4 | __ | H3 | 0000000 | 000000 | 000000 | 00 |
Thread | Drill Bit | Plug Chamfer | Bottoming Chamfer | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Size | Pitch, mm | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Pitch Dia. Limit | Each | Each | ||
Titanium Aluminum Nitride (TiAlN) Coated Carbide | |||||||||||
M3 | 0.5 | 5/16" | 1 15/16" | 2.5 mm | 0.0984" | 3 | D3 | 0000000 | 000000 | 0000000 | 000000 |
M4 | 0.7 | 3/8" | 2 1/8" | 3.3 mm | 0.1299" | 4 | D4 | 0000000 | 00000 | 0000000 | 00000 |
M5 | 0.8 | 1/2" | 2 3/8" | 4.2 mm | 0.1654" | 4 | D4 | 0000000 | 00000 | 0000000 | 00000 |
M6 | 1 | 5/8" | 2 1/2" | 5 mm | 0.1969" | 4 | D5 | 0000000 | 00000 | 0000000 | 00000 |
M8 | 1.25 | 11/16" | 2 23/32" | 6.75 mm | 0.2657" | 4 | D5 | 0000000 | 000000 | 0000000 | 000000 |
Taps for Hardened Steel and Iron

Tap threads into hardened steel and iron. These cobalt steel taps have straight flutes for high durability. With a square shank, they're 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. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.
Use uncoated taps for short production runs. Titanium-nitride (TiN) coated taps resist heat and wear better than uncoated taps, so they'll last longer when threading similar material.
For technical drawings and 3-D models, click on a part number.
Thread | Drill Bit | Closed-End Hole and Through-Hole Threading | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Size | Lg. | Overall Lg. | Max. Tapping Dp. | Size | Decimal Size Equivalent | No. of Flutes | Thread Type | Pitch Dia. Limit | For Maximum Hardness | Each | |
Uncoated Cobalt Steel | |||||||||||
2-56 | 7/16" | 1 13/16" | 25/64" | 51 ga. | 0.067" | 2 | UNC | H2 | Rockwell C45 | 0000000 | 000000 |
4-40 | 5/16" | 1 7/8" | 5/16" | 43 ga. | 0.089" | 3 | UNC | H2 | Rockwell C45 | 0000000 | 00000 |
5-40 | 5/16" | 1 15/16" | 5/16" | 38 ga. | 0.1015" | 3 | UNC | H2 | Rockwell C45 | 0000000 | 00000 |
6-32 | 3/8" | 2" | 3/8" | 36 ga. | 0.1065" | 3 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
8-32 | 3/8" | 2 1/8" | 3/8" | 29 ga. | 0.136" | 3 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
10-24 | 1/2" | 2 3/8" | 1/2" | 25 ga. | 0.1495" | 3 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
10-32 | 1/2" | 2 3/8" | 1/2" | 21 ga. | 0.159" | 3 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
12-24 | 1/2" | 2 1/2" | 57/64" | 16 ga. | 0.177" | 2 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
1/4"-20 | 5/8" | 2 1/2" | 5/8" | 7 ga. | 0.201" | 3 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
1/4"-28 | 5/8" | 2 1/2" | 5/8" | 3 ga. | 0.213" | 3 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
5/16"-18 | 11/16" | 2 23/32" | 11/16" | F | 0.257" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
5/16"-24 | 11/16" | 2 23/32" | 11/16" | I | 0.272" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
3/8"-16 | 3/4" | 2 15/16" | 3/4" | 5/16" | 0.3125" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
3/8"-24 | 3/4" | 2 15/16" | 3/4" | Q | 0.332" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
3/8"-24 | 3/4" | 2 15/16" | 1 3/16" | Q | 0.332" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
7/16"-14 | 7/8" | 3 5/32" | 7/8" | U | 0.368" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
7/16"-20 | 7/8" | 3 5/32" | 7/8" | 25/64" | 0.3906" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
1/2"-13 | 15/16" | 3 3/8" | 15/16" | 27/64" | 0.4219" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
1/2"-20 | 15/16" | 3 3/8" | 15/16" | 29/64" | 0.4531" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
5/8"-11 | 1 3/32" | 3 13/16" | 1 3/32" | 17/32" | 0.5313" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
5/8"-18 | 1 3/32" | 3 13/16" | 1 3/32" | 37/64" | 0.5781" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
3/4"-10 | 1 7/32" | 4 1/4" | 1 7/32" | 21/32" | 0.6563" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
3/4"-16 | 1 7/32" | 4 1/4" | 1 7/32" | 11/16" | 0.6875" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
1"-8 | 2 1/2" | 5 1/8" | 4 1/16" | 7/8" | 0.875" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 000000 |
Titanium Nitride (TiN) Coated Cobalt Steel | |||||||||||
2-56 | 7/16" | 1 13/16" | 25/64" | 51 ga. | 0.067" | 2 | UNC | H2 | Rockwell C45 | 0000000 | 00000 |
4-40 | 5/16" | 1 7/8" | 5/16" | 43 ga. | 0.089" | 3 | UNC | H2 | Rockwell C45 | 00000000 | 00000 |
5-40 | 5/16" | 1 15/16" | 5/16" | 38 ga. | 0.1015" | 3 | UNC | H2 | Rockwell C45 | 0000000 | 00000 |
6-32 | 3/8" | 2" | 3/8" | 36 ga. | 0.1065" | 3 | UNC | H3 | Rockwell C45 | 00000000 | 00000 |
8-32 | 3/8" | 2 1/8" | 3/8" | 29 ga. | 0.136" | 3 | UNC | H3 | Rockwell C45 | 00000000 | 00000 |
10-24 | 1/2" | 2 3/8" | 1/2" | 25 ga. | 0.1495" | 3 | UNC | H3 | Rockwell C45 | 00000000 | 00000 |
10-32 | 1/2" | 2 3/8" | 1/2" | 21 ga. | 0.159" | 3 | UNF | H3 | Rockwell C45 | 00000000 | 00000 |
12-24 | 1/2" | 2 1/2" | 57/64" | 16 ga. | 0.177" | 2 | UNC | H2 | Rockwell C45 | 0000000 | 00000 |
1/4"-20 | 5/8" | 2 1/2" | 5/8" | 7 ga. | 0.201" | 3 | UNC | H3 | Rockwell C45 | 00000000 | 00000 |
1/4"-28 | 5/8" | 2 1/2" | 5/8" | 3 ga. | 0.213" | 3 | UNF | H3 | Rockwell C45 | 00000000 | 00000 |
5/16"-18 | 11/16" | 2 23/32" | 11/16" | F | 0.257" | 3 | UNC | H3 | Rockwell C45 | 00000000 | 00000 |
5/16"-24 | 11/16" | 2 23/32" | 11/16" | I | 0.272" | 3 | UNF | H3 | Rockwell C45 | 00000000 | 00000 |
3/8"-16 | 3/4" | 2 15/16" | 3/4" | 5/16" | 0.3125" | 3 | UNC | H3 | Rockwell C45 | 00000000 | 00000 |
3/8"-24 | 3/4" | 2 15/16" | 3/4" | Q | 0.332" | 3 | UNF | H3 | Rockwell C45 | 00000000 | 00000 |
7/16"-14 | 7/8" | 3 5/32" | 7/8" | U | 0.368" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
7/16"-20 | 7/8" | 3 5/32" | 7/8" | 25/64" | 0.3906" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
1/2"-13 | 15/16" | 3 3/8" | 15/16" | 27/64" | 0.4219" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
1/2"-20 | 15/16" | 3 3/8" | 15/16" | 29/64" | 0.4531" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
5/8"-11 | 1 3/32" | 3 13/16" | 1 3/32" | 17/32" | 0.5313" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
5/8"-18 | 1 3/32" | 3 13/16" | 1 3/32" | 37/64" | 0.5781" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
3/4"-10 | 1 7/32" | 4 1/4" | 1 7/32" | 21/32" | 0.6563" | 4 | UNC | H3 | Rockwell C45 | 0000000 | 00000 |
3/4"-16 | 1 7/32" | 4 1/4" | 1 7/32" | 11/16" | 0.6875" | 4 | UNF | H3 | Rockwell C45 | 0000000 | 00000 |
1"-8 | 2 1/2" | 5 1/8" | 2 3/4" | 7/8" | 0.875" | 3 | UNC | H3 | Rockwell C45 | 0000000 | 000000 |
Thread | Drill Bit | Closed-End Hole and Through-Hole Threading | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Size | Pitch, mm | Lg. | Overall Lg. | Max. Tapping Dp. | Size | Decimal Size Equivalent | No. of Flutes | Pitch Dia. Limit | For Maximum Hardness | Each | |
Uncoated Cobalt Steel | |||||||||||
M2 | 0.4 | 7/16" | 1 13/16" | 25/64" | 1.6 mm | 0.063" | 3 | D3 | Rockwell C45 | 0000000 | 000000 |
M2.5 | 0.45 | 7/16" | 1 7/8" | 29/64" | 2.05 mm | 0.0807" | 3 | D3 | Rockwell C45 | 0000000 | 00000 |
M3 | 0.5 | 3/8" | 2 1/64" | 9/16" | 2.5 mm | 0.0984" | 3 | D3 | Rockwell C45 | 0000000 | 00000 |
M4 | 0.7 | 3/8" | 2 15/64" | 45/64" | 3.3 mm | 0.1299" | 3 | D4 | Rockwell C45 | 0000000 | 00000 |
M5 | 0.8 | 1/2" | 2 31/64" | 53/64" | 4.2 mm | 0.1654" | 3 | D4 | Rockwell C45 | 0000000 | 00000 |
M6 | 1 | 5/8" | 2 41/64" | 61/64" | 5 mm | 0.1968" | 3 | D5 | Rockwell C45 | 0000000 | 00000 |
M7 | 1 | 21/32" | 2 7/8" | 1" | 6 mm | 0.2362" | 4 | D5 | Rockwell C45 | 00000000 | 00000 |
M8 | 1 | 11/16" | 2 7/8" | 1 1/16" | 7 mm | 0.2756" | 4 | D5 | Rockwell C45 | 00000000 | 00000 |
M8 | 1.25 | 11/16" | 2 57/64" | 1 1/16" | 6.7 mm | 0.2638" | 4 | D5 | Rockwell C45 | 0000000 | 00000 |
M10 | 1.25 | 3/4" | 3 9/64" | 1 3/16" | 8.5 mm | 0.3346" | 4 | D5 | Rockwell C45 | 00000000 | 00000 |
M10 | 1.5 | 3/4" | 3 9/64" | 1 3/16" | 8.5 mm | 0.3346" | 4 | D6 | Rockwell C45 | 0000000 | 00000 |
M12 | 1.75 | 15/16" | 3 3/8" | 2 11/16" | 10.2 mm | 0.4015" | 4 | D6 | Rockwell C45 | 0000000 | 00000 |
M14 | 1.5 | 1" | 3 9/16" | 2 7/8" | 12.5 mm | 0.4921" | 4 | D6 | Rockwell C45 | 00000000 | 00000 |
M14 | 2 | 1" | 3 9/16" | 2 7/8" | 12 mm | 0.4724" | 4 | D6 | Rockwell C45 | 00000000 | 00000 |
M16 | 1.5 | 1 3/32" | 3 13/16" | 3" | 14.5 mm | 0.5709" | 4 | D6 | Rockwell C45 | 0000000 | 00000 |
M16 | 2 | 1 3/32" | 3 13/16" | 3" | 14 mm | 0.5512" | 4 | D7 | Rockwell C45 | 0000000 | 00000 |
M18 | 1.5 | 1 11/64" | 4" | 3 1/4" | 16.5 mm | 0.6496" | 4 | D6 | Rockwell C45 | 00000000 | 00000 |
M18 | 2.5 | 1 11/64" | 4" | 3 1/4" | 15.5 mm | 0.6102" | 4 | D7 | Rockwell C45 | 00000000 | 00000 |
M20 | 1.5 | 1 21/64" | 4 15/32" | 3 17/32" | 18.5 mm | 0.7283" | 4 | D6 | Rockwell C45 | 00000000 | 00000 |
M20 | 2.5 | 1 7/32" | 4 15/32" | 3 17/32" | 17.5 mm | 0.689" | 4 | D7 | Rockwell C45 | 0000000 | 00000 |
Titanium Nitride (TiN) Coated Cobalt Steel | |||||||||||
M6 | 1 | 5/8" | 2 1/2" | 5/8" | 5 mm | 0.1968" | 3 | D5 | Rockwell C45 | 00000000 | 00000 |
M8 | 1.25 | 11/16" | 2 23/32" | 11/16" | 6.7 mm | 0.2637" | 3 | D5 | Rockwell C45 | 00000000 | 00000 |
M10 | 1.5 | 3/4" | 2 15/16" | 3/4" | 8.5 mm | 0.3346" | 3 | D6 | Rockwell C45 | 00000000 | 00000 |
M12 | 1.75 | 15/16" | 3 3/8" | 15/16" | 10.2 mm | 0.4015" | 4 | D6 | Rockwell C45 | 00000000 | 00000 |
Thread Mills


Cut a range of thread sizes with a single tool. These thread mills can also produce both right-hand and left-hand threads. All are made of solid carbide with an aluminum-titanium-nitride (AlTiN) coating, so they have high strength and excellent wear resistance, even when cutting hard and abrasive material. Use them in a CNC machine that allows helical interpolation.
When used for internal threading, thread mills can create threads of any size equal to or greater than the minimum size listed. They leave space in the hole for chips to fall, and a broken thread mill can fall into the hole without damaging the workpiece.
Thread mills for internal threading cut threads more quickly than other thread mills, but the threads they create have a fixed pitch.
Thread mills for external threading cut with single point, producing rounded threads that are commonly used for high-stress fastening applications involving heavy loads and high pressures. Each cuts a single thread pitch.
Thread mills for internal/external threading have a single cutting point that cuts threads in a range of different pitches on both the inside and outside of the workpiece.
For technical drawings and 3-D models, click on a part number.

For Min. Thread Size | Thread Pitch, mm | Threads Per Inch | Thread Lg. | Overall Lg. | No. of Flutes | Thread Type | Shank Size | Each | |
Aluminum-Titanium-Nitride (AlTiN) Coated Carbide | |||||||||
---|---|---|---|---|---|---|---|---|---|
#4 | __ | 40 | 3/16" | 2 1/2" | 2 | UNC, UNEF, UNF, UNJ, UNS | 1/4" | 0000000 | 0000000 |
#6 | __ | 32 | 17/64" | 2 1/2" | 3 | UNC, UNEF, UNF, UNJ, UNS | 1/4" | 0000000 | 000000 |
#8 | __ | 32 | 17/64" | 2 1/2" | 3 | UNC, UNEF, UNF, UNJ, UNS | 1/4" | 0000000 | 000000 |
#10 | __ | 32 | 21/64" | 2 1/2" | 3 | UNC, UNEF, UNF, UNJ, UNS | 1/4" | 0000000 | 000000 |
#10 | __ | 24 | 11/32" | 2 1/2" | 3 | UNC, UNEF, UNF, UNJ, UNS | 1/4" | 0000000 | 000000 |
1/4" | __ | 20 | 33/64" | 2 1/2" | 3 | UNC, UNEF, UNF, UNJ, UNS | 1/4" | 0000000 | 000000 |
5/16" | __ | 18 | 5/8" | 2 1/2" | 3 | UNC, UNEF, UNF, UNJ, UNS | 1/4" | 0000000 | 000000 |
3/8" | __ | 16 | 25/32" | 3" | 4 | UNC, UNEF, UNF, UNJ, UNS | 5/16" | 0000000 | 000000 |
1/2" | __ | 13 | 7/8" | 3" | 4 | UNC, UNEF, UNF, UNJ, UNS | 3/8" | 0000000 | 000000 |
M5 | 0.8 | __ | 21/64" | 2 9/32" | 3 | Metric | 0.2362" | 0000000 | 000000 |
M6 | 1 | __ | 31/64" | 2 9/32" | 3 | Metric | 0.2362" | 0000000 | 000000 |
M8 | 1.25 | __ | 21/32" | 2 9/32" | 3 | Metric | 0.2362" | 0000000 | 000000 |

Threads Per Inch | Overall Lg. | Thread Type | Shank Size | Neck Dia. | Each | |
Aluminum-Titanium-Nitride (AlTiN) Coated Carbide | ||||||
---|---|---|---|---|---|---|
32 | 3" | UNJ | 3/8" | 0.24" | 0000000 | 000000 |
28 | 3" | UNJ | 3/8" | 0.24" | 0000000 | 00000 |
24 | 3" | UNJ | 3/8" | 0.24" | 0000000 | 00000 |
20 | 3" | UNJ | 3/8" | 0.24" | 0000000 | 00000 |
18 | 3" | UNJ | 3/8" | 0.24" | 0000000 | 00000 |
16 | 3" | UNJ | 3/8" | 0.24" | 0000000 | 00000 |
12 | 3 1/2" | UNJ | 1/2" | 0.34" | 0000000 | 000000 |


For Min. Thread Size | Threads Per Inch | Overall Lg. | Thread Type (For Thread Location) | Shank Size | Neck Dia. | Each | |
Aluminum-Titanium-Nitride (AlTiN) Coated Carbide | |||||||
---|---|---|---|---|---|---|---|
#2 | 56-80 | 1 1/2" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 1/8" | 0.034" | 0000000 | 000000 |
#4 | 40-64 | 2" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 3/16" | 0.045" | 0000000 | 00000 |
#6 | 32-64 | 2" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 3/16" | 0.049" | 0000000 | 00000 |
#8 | 32-56 | 2" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 3/16" | 0.07" | 0000000 | 00000 |
#10 | 24-56 | 2" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 3/16" | 0.075" | 0000000 | 00000 |
#12 | 24-56 | 2" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 3/16" | 0.08" | 0000000 | 00000 |
1/4" | 18-56 | 2 1/2" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 1/4" | 0.104" | 0000000 | 00000 |
5/16" | 16-48 | 2 1/2" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 1/4" | 0.153" | 0000000 | 00000 |
3/8" | 14-40 | 3" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 3/8" | 0.192" | 0000000 | 00000 |
1/2" | 12-32 | 3" | UNC, UNEF, UNF, UNS (Internal/External), UNJ (Internal) | 3/8" | 0.24" | 0000000 | 00000 |
Coil Thread Taps

The coil-style threads produced by these taps are shallower and more widely spaced than standard thread sizes. Use them for quick threading action with compatible fasteners. 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. All have a plug chamfer with 3-5 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.
Internal Thread Repairing File Sets

Restore bolt, hole, pipe, and conduit threading with this set of four files.
No. of Pieces | For Threads per Inch | For Thread Pitch, mm | Overall Lg. | Material | Container Type | Each | |
For Internal and External Threads | |||||||
---|---|---|---|---|---|---|---|
4 | 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 24, 27, 28, 32 | 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3 | 9 1/4" | Steel | Plastic Pouch | 0000000 | 0000000 |
Internal Thread Repairing Files

One file restores a range of thread sizes in most hole diameters.
Internal Pipe and Conduit Thread Repairing Files

Repair rusted and damaged threads in pipe and conduit. These files are for use in most hole diameters.
Optional file handles slip over the file to provide a comfortable grip.
Files | File Handles | ||||||||
---|---|---|---|---|---|---|---|---|---|
For Threads per Inch | Wd. | Thick. | Overall Lg. | Material | Each | Pkg. Qty. | Pkg. | ||
For Internal Threads | |||||||||
8, 10 | 7/16" | 7/16" | 10" | Steel | 0000000 | 000000 | 6 | 0000000 | 00000 |
8, 11 1/2 | 7/16" | 7/16" | 10" | Steel | 0000000 | 00000 | 6 | 0000000 | 0000 |
10, 14 | 7/16" | 7/16" | 10" | Steel | 0000000 | 00000 | 6 | 0000000 | 0000 |
For Internal and External Threads | |||||||||
8, 10, 11 1/2, 14, 16, 18, 24, 27 | 3/8" | 3/8" | 9 1/4" | Steel | 0000000 | 00000 | __ | 000000 | 00 |
Any-Pitch Internal Thread Repairing Tools

These tools have adjustable blades to repair any inch or metric thread size. Use them on threaded holes with an ID from 5/16" to 1-1/4" or 8 mm to 32 mm.
For technical drawings and 3-D models, click on a part number.
Tools | Repl. Blades | Repl. Pads | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For ID Range - Inch | For ID Range - Metric | For Threads per Inch | For Thread Pitch | Overall Lg. | Blade Material | Handle Material | Each | Each | Each | |||
For Internal Threads | ||||||||||||
5/16"-7/16" | 8 mm-11 mm | Any | Any | 4 5/16" | Steel | Plastic | 0000000 | 0000000 | 0000000 | 000000 | 0000000 | 00000 |
1/2"-5/8" | 12 mm-16 mm | Any | Any | 4 5/16" | Steel | Plastic | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 0000 |
11/16"-13/16" | 16 mm-20 mm | Any | Any | 4 3/8" | Steel | Plastic | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 0000 |
7/8"-1 1/4" | 22 mm-32 mm | Any | Any | 5 3/8" | Steel | Plastic | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 0000 |
Chip-Clearing Tap Sets for Through-Holes

Sets include multiple tap sizes for threading different hole diameters. Also known as gun taps, all have spiral-point flutes that push chips ahead of the tap and out of through holes. Because they don't need to be reversed to prevent buildup, they produce threads more efficiently than standard taps and are suitable for production work. They're made of 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. Their plug chamfer starts threads with moderate torque and is good for start-to-finish tapping.
Uncoated taps are strong enough for most tapping jobs but have the shortest tool life.
Taps with a gold-oxide finish produce less friction than uncoated taps, but do not last as long as titanium-nitride (TiN) coated taps.
Titanium-nitride (TiN) coated taps resist heat and wear better than uncoated taps, letting them last up to twice as long. They also last longer than taps with a gold-oxide finish.
For technical drawings and 3-D models, click on a part number.
No. of Pieces | Chamfer Type | Tap Sizes Included | Thread Type | No. of Flutes | Specifications Met | Container Type | Each | |
Uncoated High-Speed Steel | ||||||||
---|---|---|---|---|---|---|---|---|
7 | Plug | M3 × 0.50 mm M4 × 0.70 mm M5 × 0.80 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.50 mm M12 × 1.75 mm | Metric | 3 | ISO 529 | Plastic Case | 0000000 | 0000000 |
Gold-Oxide High-Speed Steel | ||||||||
10 | Plug | 1/4"-20 1/4"-28 5/16"-18 5/16"-24 3/8"-24 3/8"-16 7/16"-14 7/16"-20 1/2"-13 1/2"-20 | UNC, UNF | 2, 3 | __ | Metal Case | 00000000 | 000000 |
19 | Plug | 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 | UNC, UNF | 2 | __ | Metal Case | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||
7 | Plug | M3 × 0.50 mm M4 × 0.70 mm M5 × 0.80 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.50 mm M12 × 1.75 mm | Metric | 3 | ISO 529 | Plastic Case | 0000000 | 000000 |
Chip-Clearing Tap and Drill Bit Sets for Through-Holes

Also known as gun taps, the taps in these sets have spiral-point flutes that push chips ahead of the tap and out of through holes. Because they don't need to be reversed to prevent buildup, they produce threads more efficiently than standard taps and are suitable for production work. Taps have a square shank for compatibility with tap wrenches and tap holders for drill presses and milling machines. With a plug chamfer, they have 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping. All taps and drill bits are made of high-speed steel for use on most metal and plastic.
No. of Pieces | Chamfer Type | Tap Sizes Included | Thread Type | No. of Flutes | Pitch Dia. Limit | Drill Bit Sizes Included | Drill Bit Material | Container Type | Each | |
Gold Oxide High-Speed Steel | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
18 | Plug | 6-40 8-36 10-24 10-32 1/4"-28 5/16"-24 3/8"-24 7/16"-20 1/2"-20 | UNF | 2, 3 | H2, H3 | 29/64" 25/64" 33 ga. 29 ga. 25 ga. 21 ga. 3 ga. I Q | Gold Oxide High-Speed Steel | Metal Case | 00000000 | 0000000 |
18 | Plug | M2.5 × 0.45 mm M3 × 0.5 mm M3.5 × 0.6 mm M4 × 0.7 mm M5 × 0.8 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.5 mm M12 × 1.75 mm | Metric | 2, 3 | D3, D4, D5, D6 | 2.05 mm 2.5 mm 2.9 mm 3.3 mm 4.2 mm 5 mm 6.7 mm 8.5 mm 10.2 mm | Gold Oxide High-Speed Steel | Metal Case | 00000000 | 000000 |