Clear All
Thread Type Thread Type |
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Thread Size Thread Size |
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Thread Direction Thread Direction |
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Application Application |
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Material Material |
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Flute Type Flute Type |
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 | Straight |
Individual/Set Individual/Set |
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Overall Length Overall Length |
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Drill Bit Decimal Size Equivalent Drill Bit DecimalSize Equivalent |
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Drill Bit Size Drill Bit Size |
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Number of Tapping Ends Number of Tapping Ends |
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Shank Type Shank Type |
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 | Square |
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Finish Finish |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Acme and Metric Trapezoidal Thread Taps
Form general purpose Acme threads. These high-speed steel taps are for use on most metal and plastic. With a square shank, they're compatible with tap holders for drill presses and milling machines. Also known as tandem taps, these have an extended chamfer with two sets of chamfered cutting threads. Because these sets of threads have different shapes, reversing the tap for removal may cause damage to the workpiece and is not recommended. Use these taps with a rigid setup to tap through holes only.
Metric trapezoidal threads are similar to Acme threads.
For technical drawings and 3-D models, click on a part number.
Acme
Thread | Drill Bit | Right Hand | Left Hand | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Pitch Dia. Limit | Each | Each | ||
Uncoated High-Speed Steel | ||||||||||
| 1/4"-16 | 1 3/4" | 3" | 10 ga. | 0.1935" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 3/8"-12 | 2 1/8" | 4 1/16" | 7.6 mm | 0.2992" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 7/16"-12 | 2 9/16" | 5" | 23/64" | 0.3594" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1/2"-10 | 2 9/16" | 5" | 13/32" | 0.4063" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 5/8"-8 | 3 3/16" | 6 1/4" | 13 mm | 0.5118" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 5/8"-10 | 3 3/16" | 6 1/4" | 17/32" | 0.5313" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 3/4"-5 | 4 5/16" | 7 15/16" | 14.5 mm | 0.5709" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 3/4"-6 | 4 5/16" | 7 15/16" | 39/64" | 0.6094" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 3/4"-8 | 4 5/16" | 7 15/16" | 41/64" | 0.6406" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 3/4"-10 | 4 5/16" | 7 15/16" | 21/32" | 0.6563" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 3/4"-16 | 4 5/16" | 7 15/16" | 11/16" | 0.6875" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 7/8"-6 | 4 3/8" | 8 5/8" | 47/64" | 0.7344" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1"-4 | 5 1/4" | 10 1/8" | 49/64" | 0.7656" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1"-5 | 5 1/4" | 10 1/8" | 21 mm | 0.8268" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1"-6 | 5 1/4" | 10 1/8" | 53/64" | 0.833" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1"-8 | 5 1/4" | 10 1/8" | 7/8" | 0.875" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1"-10 | 5 1/4" | 10 1/8" | 29/32" | 0.9063" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1 1/8"-5 | 5 1/4" | 10 3/4" | 24 mm | 0.9449" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1 1/4"-4 | 5 1/4" | 11 1/8" | 1 1/64" | 1.0156" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1 1/4"-5 | 5 1/4" | 11 1/8" | 1 5/64" | 1.0781" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1 3/8"-4 | 5 7/8" | 12 1/4" | 1 9/64" | 1.1406" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1 1/2"-4 | 5 7/8" | 12 5/8" | 32 mm | 1.2598" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
| 1 1/2"-5 | 5 7/8" | 12 5/8" | 1 19/64" | 1.3" | 4 | 2G | 00000000 | 000000 | 00000000 | 000000 |
Metric Trapezoidal
Thread | Drill Bit | Right Hand | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg. | Overall Lg. | Size | Decimal Size Equivalent | No. of Flutes | Pitch Dia. Limit | Each | |
Uncoated High-Speed Steel | |||||||||
| M10 | 2 | 2.56" | 5 1/8" | 8 mm | 0.315" | 3 | H7 | 0000000 | 0000000 |
| M12 | 3 | 2.56" | 5 1/8" | 9 mm | 0.3543" | 3 | H7 | 0000000 | 000000 |
| M14 | 3 | 3.15" | 6 5/16" | 11 mm | 0.4331" | 4 | H7 | 0000000 | 000000 |
| M16 | 4 | 3.15" | 6 5/16" | 12 mm | 0.4724" | 4 | H7 | 0000000 | 000000 |
| M18 | 4 | 4.33" | 7 7/8" | 14 mm | 0.5512" | 4 | H7 | 0000000 | 000000 |
| M20 | 4 | 4.33" | 8 3/4" | 16 mm | 0.6299" | 4 | H7 | 0000000 | 000000 |
| M22 | 5 | 4.33" | 8 3/4" | 17 mm | 0.6693" | 4 | H7 | 0000000 | 000000 |
| M24 | 5 | 5.31" | 10 1/4" | 19 mm | 0.748" | 4 | H7 | 0000000 | 000000 |
| M26 | 5 | 5.31" | 10 1/4" | 21 mm | 0.8268" | 4 | H7 | 0000000 | 000000 |