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Pipe and Conduit Thread Taps
Create threads sized for pipe and conduit. For use on most metal and plastic, these high-speed steel taps are durable enough for small-scale tapping jobs, but they're not recommended for production use. They have a square shank that's compatible with tap wrenches and tap holders for drill presses and milling machines.
Uncoated taps are strong enough for most tapping jobs but have the shortest tool life. Titanium-nitride (TiN) coated taps resist heat and wear better than uncoated taps, letting them last up to twice as long.
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 | Bottoming Chamfer | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Threads Per Inch | Thread Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Each | |
Uncoated High-Speed Steel | |||||||||
| 1/8 | BSPP | 28 | 3/4" | 2 1/8" | 8.8 mm | 0.3464" | 4 | 0000000 | 000000 |
| 1/4 | BSPP | 19 | 1 1/16" | 2 7/16" | 11.8 mm | 0.4645" | 4 | 0000000 | 00000 |
| 3/8 | BSPP | 19 | 1 1/16" | 2 9/16" | 15 mm | 0.5905" | 4 | 0000000 | 00000 |
| 1/2 | BSPP | 14 | 1 3/8" | 3 1/8" | 19 mm | 0.748" | 4 | 0000000 | 00000 |
| 3/4 | BSPP | 14 | 1 3/8" | 3 1/4" | 24 mm | 0.9449" | 5 | 0000000 | 00000 |
| 1 | BSPP | 11 | 1 3/4" | 3 3/4" | 30 mm | 1.1811" | 5 | 0000000 | 00000 |
| 1 1/4 | BSPP | 11 | 1 3/4" | 4" | 39.5 mm | 1.5551" | 5 | 0000000 | 000000 |
| 1 1/2 | BSPP | 11 | 1 3/4" | 4 1/4" | 45 mm | 1.7716" | 7 | 0000000 | 000000 |
| 2 | BSPP | 11 | 1 3/4" | 4 1/2" | 57 mm | 2.244" | 7 | 0000000 | 000000 |
Titanium Nitride (TiN) Coated High-Speed Steel | |||||||||
| 1/8 | BSPP | 28 | 3/4" | 2 1/8" | 8.8 mm | 0.3464" | 4 | 0000000 | 00000 |
| 1/4 | BSPP | 19 | 1 1/16" | 2 7/16" | 11.8 mm | 0.4645" | 4 | 0000000 | 00000 |
| 3/8 | BSPP | 19 | 1 1/16" | 2 9/16" | 15 mm | 0.5905" | 4 | 0000000 | 00000 |
| 1/2 | BSPP | 14 | 1 3/8" | 3 1/8" | 19 mm | 0.748" | 4 | 0000000 | 00000 |
| 3/4 | BSPP | 14 | 1 3/8" | 3 1/4" | 24 mm | 0.9449" | 4 | 0000000 | 00000 |
| 1 | BSPP | 11 | 1 3/4" | 3 3/4" | 30 mm | 1.1811" | 6 | 0000000 | 00000 |
| 1 1/4 | BSPP | 11 | 1 3/4" | 4" | 39.5 mm | 1.5551" | 6 | 0000000 | 000000 |
| 1 1/2 | BSPP | 11 | 1 3/4" | 4 1/4" | 45 mm | 1.7716" | 6 | 0000000 | 000000 |
Pipe and Conduit Thread Taps with Two Threading Ends
With a taper chamfer on one threading end and a bottoming chamfer on the other, these pipe and conduit taps start threads easily and are good for threading close to the bottom of closed-end holes. The taper chamfer has 7-10 chamfered cutting threads to drive into the workpiece and start threads with less torque than other chamfer types. The bottoming chamfer has 1-2 chamfered cutting threads to create full threads near the bottom of closed-end holes. To tap threads, turn the tap with an open-end wrench or drive it at either end using an L-key or ratchet wrench. All are made of high-speed steel and are for use on most metal and plastic.
Drill Bit | Taper and Bottoming Chamfers | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Threads Per Inch | Thread Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | For Wrench Size, mm | For Hex Drive Size, mm | Each | |
Uncoated High-Speed Steel | |||||||||||
| 1/4 | BSPP | 19 | 55/64" | 2 3/4" | 11.8 mm | 0.4645" | 4 | 8 | 4 | 0000000 | 000000 |
| 3/8 | BSPP | 19 | 55/64" | 2 3/4" | 15.3 mm | 0.6024" | 4 | 12 | 4 | 0000000 | 00000 |
| 1/2 | BSPP | 14 | 15/16" | 3 9/64" | 19 mm | 0.748" | 4 | 15 | 6 | 0000000 | 00000 |
| 3/4 | BSPP | 14 | 1 1/16" | 3 35/64" | 24.5 mm | 0.9646" | 4 | 19 | 8 | 0000000 | 000000 |
| 1 | BSPP | 11 | 1 9/64" | 3 15/16" | 30.5 mm | 1.2008" | 4 | 24 | 10 | 0000000 | 000000 |
Pipe and Conduit Thread Taps for Stainless Steel and Plastic
The spiral flutes on these pipe and conduit taps keep chips clear by drawing them back out of the hole, so there's no need to reverse the tap while cutting threads. All have a square shank, so they're compatible with tap wrenches and tap holders for drill presses and milling machines.
Uncoated high-speed steel taps are for use on plastic. They have a bottoming chamfer that cuts into the workpiece with 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 | Bottoming Chamfer | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Threads Per Inch | Thread Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Each | |
| 1/8 | BSPP | 28 | 3/4" | 2 5/32" | 8.8 mm | 0.3464" | 3 | 0000000 | 000000 |
| 1/4 | BSPP | 19 | 1 3/32" | 2 7/16" | 11.8 mm | 0.4646" | 3 | 0000000 | 00000 |
| 3/8 | BSPP | 19 | 1 3/32" | 2 9/16" | 15.3 mm | 0.6024" | 3 | 0000000 | 00000 |
| 1/2 | BSPP | 14 | 1 3/8" | 3 9/64" | 19 mm | 0.748" | 3 | 0000000 | 00000 |
Taps for Helical Inserts
Add threads to holes in preparation for installing helical inserts. These taps are made of uncoated 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.
For technical drawings and 3-D models, click on a part number.
For Insert | Drill Bit | Plug Chamfer | ||||||||
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| Pipe Size | Threads per Inch | Thread Lg. | Overall Lg. | Max. Tapping Dp. | Size | Decimal Size Equivalent | No. of Flutes | For Insert Thread Type | Each | |
Uncoated High-Speed Steel | ||||||||||
| 1/8 | 28 | 1 1/2" | 3 1/8" | 1 1/2" | 25/64" | 0.3906" | 4 | BSPP | 000000000 | 000000 |
| 1/4 | 19 | 1 5/8" | 3 1/2" | 1 5/8" | 17/32" | 0.5313" | 4 | BSPP | 000000000 | 00000 |
| 3/8 | 19 | 1 7/8" | 4" | 1 7/8" | 43/64'' | 0.6719" | 4 | BSPP | 000000000 | 00000 |
| 1/2 | 14 | 2 1/4" | 4 7/8" | 2 1/4" | 27/32" | 0.8738" | 4 | BSPP | 000000000 | 00000 |
Pipe and Conduit Tap Sets
Create pipe and conduit threads in a range of hole diameters. With a square shank, these taps are compatible with tap wrenches and tap holders for drill presses and milling machines.
Taps wth BSPP threads have a bottoming chamfer that 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.
Carbon steel taps are for thread repair and occasional tapping.
| No. of Pieces | Chamfer Type | Thread Type | Pipe Size | No. of Flutes | Container Type | Each | |
Uncoated Carbon Steel | |||||||
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| 6 | Bottoming | BSPP, Metric | 1/8 1/4 3/8 1/2 3/4 1 | 4, 5 | Fabric Pouch | 00000000 | 0000000 |