For Tap Size For Tap Size |
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For Use With For Use With |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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For Tap Thread Size For Tap Thread Size |
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Collets for Auto-Reversing Tap Holders for Jacobs Taper Shanks


Attach taps to auto-reversing tap holders for Jacobs taper shanks.
Manufacturer Model Number | For Tap Size | Body Dia. | Overall Lg. | Material | Jaw Insert Material | Each | |
J116 | No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8 | 0.59" | 0.468" | Rubber | Steel | 00000000 | 000000 |
J117 | No. 10, No. 12, No. 14, 3/16", 7/32", 1/4" | 0.59" | 0.468" | Rubber | Steel | 00000000 | 00000 |
J420 | No. 10, No. 12, No. 14, 3/16", 7/32", 1/4", 9/32", 5/16" | 0.941" | 0.5" | Rubber | Steel | 00000000 | 00000 |
J421 | No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, No. 14, 3/16", 7/32", 1/4" | 0.941" | 0.5" | Rubber | Steel | 00000000 | 00000 |
J422 | 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2" | 0.941" | 0.5" | Rubber | Steel | 00000000 | 00000 |
J423 | No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8 | 0.86" | 0.5" | Rubber | Steel | 00000000 | 00000 |
J440 | 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8" | 1.296" | 0.63" | Rubber | Steel | 00000000 | 00000 |
J441 | No. 10, No. 12, No. 14, 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2" | 1.296" | 0.63" | Rubber | Steel | 00000000 | 00000 |
J443 | No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, No. 14, 3/16", 7/32", 1/4" | 1.18" | 0.62" | Rubber | Steel | 00000000 | 00000 |
Auto-Reversing Tap Holders for Jacobs Taper Shanks


Also known as tapping heads, these holders instantly reverse, allowing you to back out of a hole once it has been tapped without stopping the machine's motor. Use them for fast, precise tapping on manually operated drill presses and milling machines. Each holder comes with a chart that indicates the maximum speed, which may be lower depending on the tap size and workpiece material. Collets (sold separately) are required to connect the tap to the holder.
For technical drawings and 3-D models, click on a part number.
For Tap Size | For Tap Pipe Size | For Use On | Max. Speed, rpm | Material | Each | |
Jacobs Taper 33 | ||||||
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No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", M1.4, M1.6, M1.8, M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5, M6, M6.3, M7 | __ | Steel | 2,000 | Steel | 0000000 | 0000000 |
No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", M3, M3.5, M4, M4.5, M5, M6, M6.3, M7, M8, M9, M10, M11, M12 | 1/16, 1/8 | Steel | 1,500 | Steel | 0000000 | 000000 |