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Specifications Met
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Shank Diameter
Collet Coolant Delivery Type
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Collet Sizes Included
ER Collets
The most widely used type of collet, these collets hold cutting tools in ER collet chucks for milling, drilling, and routing. Spring slots clamp evenly around the shank to minimize runout for clean, accurate cuts and long tool life. The slots flex to grip slightly undersized shanks too, so you don't need an exact match for each cutting tool in your lineup. You can also use these collets in ER collet fixtures and custom setups to keep small round parts centered.
Hardened chrome-moly steel collets are more wear-resistant than hardened 52100 alloy steel collets. They hold their shape better over time and have lower runout, even with frequent bit changes. Often used for high-volume production runs, they stand up to high-speed, high-force machining in any material.
| Collet Size | Grip Range | TIR (Total Indicated Runout) Accuracy | ID Tolerance | Max. Body Dia. | Overall Lg. | Specifications Met | Each | |
ER-11 | ||||||||
|---|---|---|---|---|---|---|---|---|
Hardened Chrome-Moly Steel | ||||||||
| 1/32" | 0.024"-0.031" | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N101 | 000000 |
| 1/16" | 0.043"-0.063" | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N102 | 00000 |
| 3/32" | 0.074"-0.094" | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N103 | 00000 |
| 1/8" | 0.105"-0.125" | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N12 | 00000 |
| 5/32" | 0.141"-0.156" | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N104 | 00000 |
| 3/16" | 0.168"-0.188" | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N13 | 00000 |
| 7/32" | 0.199"-0.219" | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N105 | 00000 |
| 1/4" | 0.230"-0.250" | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N11 | 00000 |
| 1mm | 0.5 mm-1 mm | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N106 | 00000 |
| 1.5mm | 1 mm-1.5 mm | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N107 | 00000 |
| 2mm | 1.5 mm-2 mm | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N108 | 00000 |
| 3mm | 2.5 mm-3 mm | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N109 | 00000 |
| 4mm | 3.5 mm-4 mm | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N111 | 00000 |
| 5mm | 4.5 mm-5 mm | 0.0002" | -0.0001" to 0.0001" | 0.46" | 0.71" | DIN 6499B, ISO 15488B | 4560N112 | 00000 |
ER-16 | ||||||||
Hardened Chrome-Moly Steel | ||||||||
| 1/32" | 0.024"-0.031" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A301 | 00000 |
| 1/16" | 0.043"-0.063" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A302 | 00000 |
| 3/32" | 0.074"-0.094" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A303 | 00000 |
| 1/8" | 0.105"-0.125" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A304 | 00000 |
| 5/32" | 0.141"-0.156" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A305 | 00000 |
| 3/16" | 0.148"-0.188" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A306 | 00000 |
| 7/32" | 0.179"-0.219" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A307 | 00000 |
| 1/4" | 0.211"-0.250" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A308 | 00000 |
| 9/32" | 0.242"-0.281" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A309 | 00000 |
| 5/16" | 0.273"-0.313" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A311 | 00000 |
| 11/32" | 0.304"-0.344" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A312 | 00000 |
| 3/8" | 0.336"-0.375" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A313 | 00000 |
| 13/32" | 0.367"-0.406" | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A314 | 00000 |
| 1mm | 0.5 mm-1 mm | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A101 | 00000 |
| 1.5mm | 1 mm-1.5 mm | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A102 | 00000 |
| 2mm | 1.5 mm-2 mm | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A103 | 00000 |
| 3mm | 2.5 mm-3 mm | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A104 | 00000 |
| 4mm | 3.5 mm-4 mm | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A105 | 00000 |
| 5mm | 4 mm-5 mm | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A106 | 00000 |
| 6mm | 5 mm-6 mm | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A107 | 00000 |
| 8mm | 7 mm-8 mm | 0.0002" | -0.0001" to 0.0001" | 0.68" | 1.06" | DIN 6499B, ISO 15488B | 3215A108 | 00000 |
ER-20 | ||||||||
Hardened Chrome-Moly Steel | ||||||||
| 1/16" | 0.043"-0.063" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N11 | 00000 |
| 3/32" | 0.074"-0.094" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N12 | 00000 |
| 1/8" | 0.105"-0.125" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N13 | 00000 |
| 5/32" | 0.141"-0.156" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N14 | 00000 |
| 3/16" | 0.148"-0.188" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N15 | 00000 |
| 7/32" | 0.179"-0.219" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N16 | 00000 |
| 1/4" | 0.211"-0.250" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N17 | 00000 |
| 9/32" | 0.242"-0.281" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N18 | 00000 |
| 5/16" | 0.273"-0.313" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N19 | 00000 |
| 11/32" | 0.304"-0.344" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N21 | 00000 |
| 3/8" | 0.336"-0.375" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N22 | 00000 |
| 13/32" | 0.367"-0.406" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N23 | 00000 |
| 7/16" | 0.398"-0.438" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N24 | 00000 |
| 15/32" | 0.429"-0.469" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N25 | 00000 |
| 1/2" | 0.461"-0.500" | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N26 | 00000 |
| 2mm | 1.5 mm-2 mm | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N101 | 00000 |
| 3mm | 2.5 mm-3 mm | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N27 | 00000 |
| 4mm | 3.5 mm-4 mm | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N28 | 00000 |
| 5mm | 4 mm-5 mm | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N29 | 00000 |
| 6mm | 5 mm-6 mm | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N3 | 00000 |
| 7mm | 6 mm-7 mm | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N31 | 00000 |
| 8mm | 7 mm-8 mm | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N32 | 00000 |
| 10mm | 9 mm-10 mm | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N33 | 00000 |
| 12mm | 11 mm-12 mm | 0.0002" | -0.0001" to 0.0001" | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N34 | 00000 |
ER-25 | ||||||||
Hardened Chrome-Moly Steel | ||||||||
| 1/16" | 0.043"-0.063" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N11 | 00000 |
| 3/32" | 0.074"-0.094" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N12 | 00000 |
| 1/8" | 0.105"-0.125" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N13 | 00000 |
| 5/32" | 0.141"-0.156" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N14 | 00000 |
| 3/16" | 0.148"-0.188" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N15 | 00000 |
| 7/32" | 0.179"-0.219" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N16 | 00000 |
| 1/4" | 0.211"-0.250" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N17 | 00000 |
| 9/32" | 0.242"-0.281" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N18 | 00000 |
| 5/16" | 0.273"-0.313" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N19 | 00000 |
| 11/32" | 0.304"-0.344" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N21 | 00000 |
| 3/8" | 0.336"-0.375" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N22 | 00000 |
| 13/32" | 0.367"-0.406" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N23 | 00000 |
| 7/16" | 0.398"-0.438" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N24 | 00000 |
| 15/32" | 0.429"-0.469" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N25 | 00000 |
| 1/2" | 0.461"-0.500" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N26 | 00000 |
| 17/32" | 0.492"-0.531" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N27 | 00000 |
| 9/16" | 0.523"-0.563" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N28 | 00000 |
| 19/32" | 0.554"-0.594" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N29 | 00000 |
| 5/8" | 0.586"-0.625" | 0.0002" | -0.0001" to 0.0001" | 1.03" | 1.38" | DIN 6499B, ISO 15488B | 3669N31 | 00000 |
ER-32 | ||||||||
Hardened Chrome-Moly Steel | ||||||||
| 1/8" | 0.105"-0.125" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A11 | 00000 |
| 5/32" | 0.141"-0.156" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A111 | 00000 |
| 3/16" | 0.148"-0.188" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A12 | 00000 |
| 7/32" | 0.179"-0.219" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A112 | 00000 |
| 1/4" | 0.211"-0.250" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A13 | 00000 |
| 9/32" | 0.242"-0.281" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A113 | 00000 |
| 5/16" | 0.273"-0.313" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A14 | 00000 |
| 11/32" | 0.304"-0.344" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A15 | 00000 |
| 3/8" | 0.336"-0.375" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A16 | 00000 |
| 13/32" | 0.367"-0.406" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A114 | 00000 |
| 7/16" | 0.398"-0.438" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A17 | 00000 |
| 15/32" | 0.429"-0.469" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A115 | 00000 |
| 1/2" | 0.461"-0.500" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A18 | 00000 |
| 17/32" | 0.492"-0.531" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A116 | 00000 |
| 9/16" | 0.523"-0.563" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A117 | 00000 |
| 5/8" | 0.586"-0.625" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A19 | 00000 |
| 21/32" | 0.617"-0.656" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A119 | 00000 |
| 11/16" | 0.648"-0.688" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A121 | 00000 |
| 3/4" | 0.711"-0.750" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A21 | 00000 |
| 25/32" | 0.742"-0.781" | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A123 | 00000 |
| 3mm | 2.5 mm-3 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A124 | 00000 |
| 3.5mm | 3 mm-3.5 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A125 | 00000 |
| 4mm | 3.5 mm-4 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A126 | 00000 |
| 5mm | 4 mm-5 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A127 | 00000 |
| 6mm | 5 mm-6 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A128 | 00000 |
| 7mm | 6 mm-7 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A129 | 00000 |
| 8mm | 7 mm-8 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A131 | 00000 |
| 9mm | 8 mm-9 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A132 | 00000 |
| 10mm | 9 mm-10 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A133 | 00000 |
| 11mm | 10 mm-11 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A134 | 00000 |
| 12mm | 11 mm-12 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A136 | 00000 |
| 13mm | 12 mm-13 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A137 | 00000 |
| 14mm | 13 mm-14 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A138 | 00000 |
| 15mm | 14 mm-15 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A139 | 00000 |
| 16mm | 15 mm-16 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A141 | 00000 |
| 18mm | 17 mm-18 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A143 | 00000 |
| 19mm | 18 mm-19 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A144 | 00000 |
| 19.5mm | 18.5 mm-19.5 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A145 | 00000 |
| 20mm | 19 mm-20 mm | 0.0002" | -0.0001" to 0.0001" | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A146 | 00000 |
ER Coolant Control Collets
Sealed Shown in Use
Sealed
Made with high-performance machining in mind—these collets not only grip your cutting tool but also direct coolant to the tool's cutting edge. They have coolant channels designed to work with through-spindle coolant (TSC) systems to clear chips and reduce heat from friction, resulting in clean cuts and long tool life. Place them directly into your ER collet holder, no need to fuss with special collet nuts, coolant rings, or repositioning hoses and nozzles with every setup change.
You get the benefits of using an ER collet, too. Spring slots clamp evenly around the shank to minimize runout for accurate cuts. Keep in mind, these collets must form a tight seal around the tool shank for proper coolant delivery, so match the shank size to the collet size exactly for the best results.
Sealed collets run coolant through the cutting tool, so they only work with tools that have coolant holes. Since the coolant runs through the tool, they’re a better choice for deep-hole drilling and high-speed machining than collets with angled ports. Steel seals are built into their body, so they withstand higher pressure and last longer than collets with rubber seals.
Hardened chrome-moly steel collets are more wear-resistant than hardened 52100 alloy steel collets. They hold their shape better over time and have lower runout, even with frequent bit changes. Often used for high-volume production runs, they stand up to high-speed, high-force machining in any material. Their maximum coolant pressure is higher than 52100 alloy steel collets, so they’re a better choice for deep-hole drilling and turning operations in CNC Swiss lathes.
| Collet Size | TIR (Total Indicated Runout) Accuracy | ID Tolerance | Max. Coolant Pressure, psi | Max. Body Dia. | Overall Lg. | Specifications Met | Each | |
ER-20—Sealed | ||||||||
|---|---|---|---|---|---|---|---|---|
Hardened Chrome-Moly Steel | ||||||||
| 3/16" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N35 | 000000 |
| 1/4" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N36 | 00000 |
| 3/8" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N37 | 00000 |
| 1/2" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 0.83" | 1.22" | DIN 6499B, ISO 15488B | 1724N38 | 00000 |
ER-32—Sealed | ||||||||
Hardened Chrome-Moly Steel | ||||||||
| 1/4" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A147 | 00000 |
| 17/64" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A148 | 00000 |
| 19/64" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A151 | 00000 |
| 5/16" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A152 | 00000 |
| 21/64" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A153 | 00000 |
| 11/32" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A154 | 00000 |
| 3/8" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A156 | 00000 |
| 25/64" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A157 | 00000 |
| 13/32" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A158 | 00000 |
| 7/16" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A159 | 00000 |
| 29/64" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A161 | 00000 |
| 15/32" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A162 | 00000 |
| 31/64" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A163 | 00000 |
| 1/2" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A164 | 00000 |
| 33/64" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A165 | 00000 |
| 9/16" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A168 | 00000 |
| 5/8" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A173 | 00000 |
| 41/64" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A174 | 00000 |
| 3/4" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A182 | 00000 |
| 49/64" | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A183 | 00000 |
| 10mm | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A185 | 00000 |
| 10.5mm | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A186 | 00000 |
| 11mm | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A187 | 00000 |
| 12mm | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A189 | 00000 |
| 13.5mm | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A193 | 00000 |
| 14mm | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A194 | 00000 |
| 20mm | 0.0002" | -0.0001" to 0.0001" | 2,900 | 1.3" | 1.57" | DIN 6499B, ISO 15488B | 3321A207 | 00000 |
ER Collet Sets
Collet Set with Plastic Case
Collet Set
Keep a set of ER collets on hand to hold cutting tools for milling, drilling, and routing. They’re the most versatile and widely used type of collet. Spring slots clamp evenly around the shank to minimize runout for clean, accurate cuts and long tool life. The slots flex to grip slightly undersized shanks too, so you don't need an exact match for each cutting tool in your lineup. You can also use these collets in ER collet fixtures and custom setups to keep small round parts centered.
Hardened chrome-moly steel collets are more wear-resistant than hardened 52100 alloy steel collets. They hold their shape better over time and have lower runout, even with frequent bit changes. Often used for high-volume production runs, they stand up to high-speed, high-force machining in any material.
| No. of Pieces | Collet Sizes Included | TIR (Total Indicated Runout) Accuracy | ID Tolerance | Approximate Dia. Compression (Collet Size) | Max. Body Dia. | Overall Lg. | Container Type | Specifications Met | Each | |
ER-11 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Hardened Chrome-Moly Steel | ||||||||||
| 7 | 1/16"-1/4" (increments of 1/32") | 0.0002" | 0" to 0.0006" | 1/64" | 0.45" | 0.71" | Plastic Case | DIN 6499B, ISO 15488B | 9411N11 | 0000000 |
| 12 | 1.5 mm-7 mm (increments of 0.5 mm) | 0.0002" | -0.0001" to 0.0001" | 1/64" | 0.46" | 0.71" | __ | DIN 6499B, ISO 15488B | 9411N12 | 000000 |
ER-16 | ||||||||||
Hardened Chrome-Moly Steel | ||||||||||
| 9 | 2 mm-10 mm (increments of 1 mm) | 0.0002" | -0.0001" to 0.0001" | 1/64" (2 mm-4 mm) 1/32" (5 mm-10 mm) | 0.68" | 1.06" | __ | DIN 6499B, ISO 15488B | 9411N13 | 000000 |
| 12 | 1/16"-13/32" (increments of 1/32") | 0.0002" | -0.0001" to 0.0001" | 1/64" (1/16"-5/32") 1/32" (3/16"-13/32") | 0.68" | 1.06" | __ | DIN 6499B, ISO 15488B | 9411N14 | 000000 |
ER-20 | ||||||||||
Hardened Chrome-Moly Steel | ||||||||||
| 11 | 3 mm-13 mm (increments of 1 mm) | 0.0002" | -0.0001" to 0.0001" | 1/64" (3 mm-4 mm) 1/32" (5 mm-13 mm) | 0.83" | 1.22" | __ | DIN 6499B, ISO 15488B | 9411N15 | 000000 |
| 15 | 1/16"-1/2" (increments of 1/32") | 0.0002" | -0.0001" to 0.0001" | 1/64" (1/16"-5/32") 1/32" (3/16"-1/2") | 0.83" | 1.22" | __ | DIN 6499B, ISO 15488B | 9411N16 | 000000 |
ER-25 | ||||||||||
Hardened Chrome-Moly Steel | ||||||||||
| 14 | 3 mm-16 mm (increments of 1 mm) | 0.0002" | -0.0001" to 0.0001" | 1/64" (3 mm-4 mm) 1/32" (5 mm-16 mm) | 1.03" | 1.38" | __ | DIN 6499B, ISO 15488B | 9411N17 | 000000 |
| 19 | 1/16"-5/8" (increments of 1/32") | 0.0002" | -0.0001" to 0.0001" | 1/64" (1/16"-5/32") 1/32" (3/16"-5/8") | 1.03" | 1.38" | __ | DIN 6499B, ISO 15488B | 9411N18 | 000000 |
ER-32 | ||||||||||
Hardened Chrome-Moly Steel | ||||||||||
| 18 | 3 mm-20 mm (increments of 1 mm) | 0.0002" | -0.0001" to 0.0001" | 1/64" (3 mm-4 mm) 1/32" (5 mm-20 mm) | 1.31" | 1.57" | __ | DIN 6499B, ISO 15488B | 9411N19 | 000000 |
| 21 | 1/8"-3/4" (increments of 1/32") | 0.0002" | -0.0001" to 0.0001" | 1/64" (1/8"-5/32") 1/32" (3/16"-3/4") | 1.31" | 1.57" | __ | DIN 6499B, ISO 15488B | 9411N21 | 000000 |
ER Tap Collets
For Square-Shank Taps
Hold square-shank taps in ER collet chucks and tap holders to create internal threads in workpieces. To hold taps tightly in place, these collets have spring slots that grip the round part of the shank and a square opening in the base that mates with the square end. They meet DIN and ISO dimensional standards.
These collets hold inch and metric taps that have shanks that meet ANSI standards. They will not work with taps that have shanks sized to ISO, DIN, or JIS standards.
Chrome-moly steel collets are more wear-resistant than 52100 alloy steel collets. They hold their shape better over time, which helps them keep a strong grip on taps. They also have lower runout, so your taps last up to 20% longer and create more accurate threads. Often used for high-volume production runs, they hold up to high-speed and high-force tapping in any material.
| For Tap Size, Inch | For Tap Size, Metric | For Tap Size, Pipe  | For Shank Dia. | For Square Shank Size | Collet Size | Max. Body Dia. | Overall Lg. | Specifications Met | Each | |
ER-16 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Chrome-Moly Steel—0.0002" Total Indicated Runout | ||||||||||
| 5/32" to No. 8 | M4 | __ | 0.168" | 0.131" | 5/32" | 0.67" | 1.06" | DIN 6499A, ISO 15488A | 9211N63 | 0000000 |
| 3/16" to No. 10 | M4.5 to M5 | __ | 0.194" | 0.152" | 3/16" | 0.67" | 1.06" | DIN 6499A, ISO 15488A | 9211N64 | 000000 |
| No. 12 to 7/32" | __ | __ | 0.22" | 0.165" | 7/32" | 0.67" | 1.06" | DIN 6499A, ISO 15488A | 9211N65 | 000000 |
| 1/4" | M6 to M6.5 | __ | 0.255" | 0.191" | 1/4" | 0.67" | 1.06" | DIN 6499A, ISO 15488A | 9211N66 | 000000 |
ER-20 | ||||||||||
Chrome-Moly Steel—0.0002" Total Indicated Runout | ||||||||||
| 5/32" to No. 8 | M4 | __ | 0.168" | 0.131" | 5/32" | 0.83" | 1.22" | DIN 6499A, ISO 15488A | 9211N67 | 000000 |
| 3/16" to No. 10 | M4.5 to M5 | __ | 0.194" | 0.152" | 3/16" | 0.83" | 1.22" | DIN 6499A, ISO 15488A | 9211N68 | 000000 |
| No. 12 to 7/32" | __ | __ | 0.22" | 0.165" | 7/32" | 0.83" | 1.22" | DIN 6499A, ISO 15488A | 9211N69 | 000000 |
| 1/4" | M6 to M6.5 | __ | 0.255" | 0.191" | 1/4" | 0.83" | 1.22" | DIN 6499A, ISO 15488A | 9211N71 | 000000 |
| 5/16" | M6.5 to M8 | __ | 0.318" | 0.238" | 5/16" | 0.83" | 1.22" | DIN 6499A, ISO 15488A | 9211N72 | 000000 |
| 3/8" | M10 | __ | 0.381" | 0.286" | 3/8" | 0.83" | 1.22" | DIN 6499A, ISO 15488A | 9211N73 | 000000 |
| 7/16" | __ | __ | 0.323" | 0.242" | 21/64" | 0.83" | 1.22" | DIN 6499A, ISO 15488A | 9211N74 | 000000 |
| 1/2" | M12 to M12.5 | __ | 0.367" | 0.275" | 23/64" | 0.83" | 1.22" | DIN 6499A, ISO 15488A | 9211N75 | 000000 |
ER-25 | ||||||||||
Chrome-Moly Steel—0.0002" Total Indicated Runout | ||||||||||
| 5/32" to No. 8 | M4 | __ | 0.168" | 0.131" | 5/32" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N76 | 000000 |
| 3/16" to No. 10 | M4.5 to M5 | __ | 0.194" | 0.152" | 3/16" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N77 | 000000 |
| No. 12 to 7/32" | __ | __ | 0.22" | 0.165" | 7/32" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N78 | 000000 |
| 1/4" | M6 to M6.5 | __ | 0.255" | 0.191" | 1/4" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N79 | 000000 |
| 5/16" | M6.5 to M8 | __ | 0.318" | 0.238" | 5/16" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N81 | 000000 |
| 3/8" | M10 | __ | 0.381" | 0.275" | 3/8" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N82 | 000000 |
| 7/16" | __ | __ | 0.323" | 0.242" | 21/64" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N83 | 000000 |
| 1/2" | M12 to M12.5 | __ | 0.367" | 0.275" | 23/64" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N84 | 000000 |
| 9/16" | M14 | __ | 0.429" | 0.322" | 27/64" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N85 | 000000 |
| 5/8" | M16 | __ | 0.48" | 0.36" | 31/64" | 1.02" | 1.38" | DIN 6499A, ISO 15488A | 9211N86 | 000000 |
ER-32 | ||||||||||
Chrome-Moly Steel—0.0002" Total Indicated Runout | ||||||||||
| 5/32" to No. 8 | M4 | __ | 0.168" | 0.131" | 5/32" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N87 | 000000 |
| 3/16" to No. 10 | M4.5 to M5 | __ | 0.194" | 0.152" | 3/16" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N88 | 000000 |
| No. 12 to 7/32" | __ | __ | 0.22" | 0.165" | 7/32" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N89 | 000000 |
| 1/4" | M6 to M6.5 | __ | 0.255" | 0.191" | 1/4" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N91 | 000000 |
| 5/16" | M6.5 to M8 | __ | 0.318" | 0.238" | 5/16" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N92 | 000000 |
| 3/8" | M10 | __ | 0.381" | 0.286" | 3/8" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N93 | 000000 |
| 7/16" | __ | __ | 0.323" | 0.242" | 21/64" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N94 | 000000 |
| 1/2" | M12 to M12.5 | __ | 0.367" | 0.275" | 23/64" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N95 | 000000 |
| 9/16" | M14 | __ | 0.429" | 0.322" | 27/64" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N96 | 000000 |
| 5/8" | M16 | __ | 0.48" | 0.36" | 31/64" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N98 | 000000 |
| 11/16" | M18 | __ | 0.542" | 0.406" | 35/64" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N99 | 000000 |
| 3/4" | __ | __ | 0.59" | 0.442" | 19/32" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N112 | 000000 |
| 13/16" | M20 | __ | 0.652" | 0.489" | 21/32" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N113 | 000000 |
| __ | __ | 1/8 | 0.437" | 0.328" | 7/16" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N97 | 000000 |
| __ | __ | 1/4 | 0.562" | 0.421" | 9/16" | 1.3" | 1.57" | DIN 6499A, ISO 15488A | 9211N111 | 000000 |