System of Measurement System of Measurement |
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Collet Type Collet Type |
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 | 3J |
Face Type Face Type |
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 | Round |
Body Diameter Body Diameter |
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External Thread Size External Thread Size |
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For Holding For Holding |
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Material Material |
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For Use With For Use With |
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Overall Length Overall Length |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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3J Collets
When installed into a 3J collet chuck or holder, these collets securely grip round workpieces. They provide a stronger hold on small workpieces than a standard lathe chuck. All have external threads.
For technical drawings and 3-D models, click on a part number.
| Size | TIR (Total Indicated Runout) Accuracy | Workpiece Dia. Tolerance | Body Dia. | Overall Lg. | External Thread Size | Material | Each | |
Round | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3/8" | 0.0008" | -0.004" to 0" | 2" | 3 3/4" | 1.988"-20 | Steel | 00000000 | 000000 |
| 1/2" | 0.0011" | -0.004" to 0" | 2" | 3 3/4" | 1.988"-20 | Steel | 00000000 | 00000 |
| 5/8" | 0.0011" | -0.004" to 0" | 2" | 3 3/4" | 1.988"-20 | Steel | 00000000 | 00000 |
| 3/4" | 0.0015" | -0.004" to 0" | 2" | 3 3/4" | 1.988"-20 | Steel | 00000000 | 00000 |
| 7/8" | 0.0015" | -0.004" to 0" | 2" | 3 3/4" | 1.988"-20 | Steel | 00000000 | 00000 |
| 1" | 0.0015" | -0.004" to 0" | 2" | 3 3/4" | 1.988"-20 | Steel | 00000000 | 00000 |
| 1 1/8" | 0.0015" | -0.004" to 0" | 2" | 3 3/4" | 1.988"-20 | Steel | 00000000 | 00000 |
| 1 1/4" | 0.0015" | -0.004" to 0" | 2" | 3 3/4" | 1.988"-20 | Steel | 00000000 | 00000 |
| 1 1/2" | 0.0015" | -0.004" to 0" | 2" | 3 3/4" | 1.988"-20 | Steel | 00000000 | 00000 |