System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Thread Type Thread Type |
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For Use On For Use On |
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Flute Type Flute Type |
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![]() | Straight |
![]() | Spiral Point |
![]() | Spiral |
Overall Length Overall Length |
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Material Material |
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Finish Finish |
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Individual/Set Individual/Set |
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Maximum Tapping Depth Maximum Tapping Depth |
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Drill Bit Finish Drill Bit Finish |
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Application Application |
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Thread Direction Thread Direction |
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Container Type Container Type |
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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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General Purpose Taps




Cut threads into 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. For better chip flow, choose a tap with fewer flutes.
Drive square-shank taps with a tap wrench or use them in a tap holder 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. Taper-chamfer taps have 7-10 chamfered threads at the tip for cutting into the workpiece. They require less torque than other chamfer types, making them a good choice for starting threads and tapping through holes. However, a longer taper means that they cannot thread as close to the bottom of closed-end holes.
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. However, they do not start threads as easily as taper chamfers. 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.
Sets include one taper-, one plug-, and one bottoming-chamfer tap.
For technical drawings and 3-D models, click on a part number.
Thread | Drill Bit | Tap Sets | ||||||||||
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Size | Pitch, mm | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Pitch Dia. Limit | Shank Type | Each | Each | ||
Taper Chamfer | ||||||||||||
Uncoated High-Speed Steel | ||||||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 3 | D3 | Square | 0000000 | 000000 | 00000000 | 000000 |
Titanium Nitride (TiN) Coated High-Speed Steel | ||||||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 3 | D3 | Square | 00000000 | 00000 | 00000000 | 00000 |
Plug Chamfer | ||||||||||||
Uncoated High-Speed Steel | ||||||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 3 | D3 | Square | 0000000 | 00000 | 00000000 | 00000 |
Titanium Nitride (TiN) Coated High-Speed Steel | ||||||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 3 | D3 | Square | 00000000 | 00000 | 00000000 | 00000 |
Bottoming Chamfer | ||||||||||||
Uncoated High-Speed Steel | ||||||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 3 | D3 | Square | 0000000 | 00000 | 00000000 | 00000 |
Titanium Nitride (TiN) Coated High-Speed Steel | ||||||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 3 | D3 | Square | 00000000 | 00000 | 00000000 | 00000 |
Chip-Clearing Taps for Through Holes

Keep chips clear while tapping. Also known as gun taps, these 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 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 plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping.
Use uncoated taps for short production runs. Titanium-nitride (TiN) coated taps resist heat and wear better than uncoated taps, letting them last up to twice as long. Titanium-carbonitride (TiCN) coated taps have up to three times the tool life of uncoated taps. Their hard, smooth finish offers superior resistance to chipping, wear, and heat.
For technical drawings and 3-D models, click on a part number.
Thread | Drill Bit | Plug Chamfer | |||||||
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Size | Pitch, mm | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Pitch Dia. Limit | Each | |
Uncoated High-Speed Steel | |||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 2 | D3 | 0000000 | 000000 |
Titanium Nitride (TiN) Coated High-Speed Steel | |||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 2 | D3 | 0000000 | 00000 |
Titanium Carbonitride (TiCN) Coated High-Speed Steel | |||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 2 | D3 | 0000000 | 00000 |
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.
For technical drawings and 3-D models, click on a part number.
Thread | Drill Bit | Closed-End Hole and Through-Hole Threading | |||||||||
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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 | |||||||||||
M2.5 | 0.45 | 7/16" | 1 7/8" | 29/64" | 2.05 mm | 0.0807" | 3 | D3 | Rockwell C45 | 0000000 | 000000 |
Taps for Nickel


To tap nickel and other hard material, these cobalt steel taps have high cutting strength. Their spiral flutes keep chips clear, so they don't need to be reversed to prevent buildup. 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.
Taps for through-hole threading push chips ahead of the tap and out of through holes.
Taps for closed-end hole threading draw chips back toward the tap while cutting threads, preventing chip accumulation in closed-end holes.
For technical drawings and 3-D models, click on a part number.
Tap Sets

These taps are for use on most metal and plastic. They have a square shank that's compatible with tap wrenches and tap holders for drill presses and milling machines.
Use uncoated high-speed steel taps for small-scale tapping jobs. Titanium-nitride (TiN) coated high-speed steel taps resist heat and wear better than uncoated taps, letting them last up to twice as long.
Taper-chamfer taps have 7-10 chamfered threads at the tip for cutting into the workpiece. They require less torque than other chamfer types, making them a good choice for starting threads and tapping through holes. However, a longer taper means that they cannot thread as close to the bottom of closed-end holes.
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. However, they do not start threads as easily as taper chamfers. 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 | |||||||||||
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Tap Sizes Included | Thread Pitch, mm | Thread Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Pitch Dia. Limit | Container Type | No. of Pieces | Each | |
Uncoated High-Speed Steel | |||||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 3 | D3 | Plastic Case | 3 | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||
M2.5 | 0.45 | 1/2" | 1 13/16" | 2.05 mm | 0.0807" | 3 | D3 | Plastic Case | 3 | 00000000 | 00000 |
Tap and Drill Bit Sets

Drill and tap a variety of hole sizes. These taps and drill bits are for use on metal and plastic.
High-speed steel taps and drill bits have a longer tool life than carbon steel. Uncoated high-speed steel taps and drill bits are strong enough for most jobs but don’t last as long as other high-speed steel taps and drill bits. Use them for small-scale jobs.
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. However, they do not start threads as easily as taper chamfers. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.
No. of Pieces | Chamfer Type | Tap Sizes Included | No. of Flutes | Drill Bit Sizes Included | Drill Bit Material | Container Type | Each | |
Uncoated High-Speed Steel Taps | ||||||||
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18 | Plug | 1 each of sizes: M2.5 × 0.45 mm M3 × 0.50 mm M3.5 × 0.60 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 | 3, 4 | 2.05 mm 2.5 mm 2.9 mm 3.3 mm 4.2 mm 5.0 mm 6.7 mm 8.5 mm 10.2 mm | Uncoated High-Speed Steel | Metal Case | 00000000 | 0000000 |
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.
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 | Pitch Dia. Limit | Drill Bit Sizes Included | Drill Bit Material | Container Type | Each | |
Gold Oxide High-Speed Steel | ||||||||||
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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 | 0000000 |
Helical Inserts with Installation Tools

Inserts come with a through-hole tap and installation tool. Also known as Heli-Coil inserts, they have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw.
Thread Size | Thread Pitch, mm | Thread Spacing | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | No. of Inserts Included | Includes | Each | |
18-8 Stainless Steel—Right-Hand Threaded | |||||||||
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M2.5 | 0.45 | Coarse | 3.8 | No. 38 | 0.1015" | 10 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 0000000 |