System of Measurement System of Measurement |
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Size Size | Show |
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Size Size | Hide |
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Grip Range Grip Range |
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For Holding For Holding |
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Face Type Face Type |
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![]() | Round |
Material Material |
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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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Approximate Diameter Compression Approximate DiameterCompression |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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External Thread Size External Thread Size |
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R8 Collets

Use these collets to securely hold round-shank tool bits in the R8 spindle of a milling machine. They have internal 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. | Internal Thread Size | Material | Each | |
Round | ||||||||
|---|---|---|---|---|---|---|---|---|
| 5/32" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 000000 |
ER-32 Collets

Install into an ER-32 collet chuck or holder to tightly grip round-shank tool bits in milling machines.
For technical drawings and 3-D models, click on a part number.
| Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Specifications Met | Each | |
Round | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 5/32" | 0.125"-0.156" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | DIN 6499, ISO 15488B | 00000000 | 000000 |
5C Collets

These collets tightly grip workpieces when installed into a 5C collet chuck or holder. They provide a stronger hold on small workpieces than a standard lathe chuck.
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. | Internal Thread Size | External Thread Size | Material | Each | |
Round | |||||||||
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| 5/32" | 0.0008" | -0.004" to 0" | 1 1/4" | 3.27" | 1.041"-24 | 1.238"-20 | Steel | 00000000 | 000000 |
ER-20 Collets

Install into an ER-20 collet chuck or holder to tightly grip round-shank tool bits in milling machines. To ensure they work with milling machines and tooling made throughout the world, these collets meet both ISO and DIN dimensional standards.
For technical drawings and 3-D models, click on a part number.
| Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Specifications Met | Each | |
Round | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 5/32" | 0.125"-0.156" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | DIN 6499, ISO 15488B | 0000000 | 000000 |


























