Product Description

  • Huge inventory of Round, Hex, Square, and Emergency styles always in stock, ready for same-day shipping.
  • Smooth and serrated versions for round-bore models (all others smooth only).
  • Industry-leading 0.062″ gripping range covers a wide range of part diameters.
  • Parallel-grip ensures full-length part contact for maximum grip force, rigidity, and accuracy.
  • Can be counter-bored for increased part capacity up to 2.62″
  • Quick-ship specials available for custom shapes.
Ground DiameterRangeSmooth Part NumberSerrated Part Number
3/16″0.157″–0.219″44101N/A
7/32″0.188″–0.250″44102N/A
1/4″0.219″–0.281″44103N/A
9/32″0.250″–0.312″44104N/A
5/16″0.282″–0.344″44105N/A
11/32″0.313″–0.375″4410644155
3/8″0.344″–0.406″4410744156
13/32″0.375″–0.437″4410844157
7/16″0.407″–0.469″4410944158
15/32″0.438″–0.500″4411044159
1/2″0.469″–0.531″4411144160
17/32″0.500″–0.562″4411244161
9/16″0.532″–0.594″4411344162
19/32″0.563″–0.625″4411444163
5/8″0.594″–0.656″4411544164
21/32″0.625″–0.687″4411644165
11/16″0.657″–0.719″4411744166
23/32″0.688″–0.750″4411844167
3/4″0.719″–0.781″4411944168
25/32″0.750″–0.812″4412044169
13/16″0.782″–0.844″4412144170
27/32″0.813″–0.875″4412244171
7/8″0.844″–0.906″4412344172
29/32″0.875″–0.937″4412444173
15/16″0.907″–0.969″4412544174
31/32″0.938″–1.000″4412644175
1″0.969″–1.031″4412744176
1 1/32″1.000″–1.062″44128Call
1 1/16″1.032″–1.094″4412944177
1 3/32″1.063″–1.125″44130Call
1 1/1″8″1.094″–1.156″4413144178
1 5/32″1.125″–1.187″44132Call
1 3/16″1.157″–1.219″4413344179
1 7/32″1.188″–1.250″44134Call
1 1/4″1.219″–1.281″4413544180
1 9/32″1.250″–1.312″44136Call
1 5/16″1.282″–1.344″4413744181
1 11/32″1.313″–1.375″44138Call
1 3/8″1.344″–1.406″4413944182
1 13/32″1.375″–1.437″44140Call
1 7/16″1.407″–1.469″4414144183
1 15/32″1.438″–1.500″44142Call
1 1/2″1.469″–1.531″4414344184
1 17/32″1.500″–1.562″44144Call
1 9/16″1.532″–1.594″4414544185
1 19/32″1.563″–1.625″44146Call
1 5/8″1.594″–1.656″4414744186
Nominal SizeRangePart Number
1/4″0.219″–0.281″44375
3/8″0.344″–0.406″44377
1/2″0.469″–0.531″44379
5/8″0.594″–0.656″44381
3/4″0.719″–0.781″44383
7/8″0.844″–0.906″44385
1″0.969″–1.031″44387
11/8″1.094″–1.156″44389
11/4″1.219″–1.281″44391
13/8″1.344″–1.406″44393
Nominal SizeRangePart Number
1/4″0.219″–0.281″44670
3/8″0.344″–0.406″44672
1/2″0.469″–0.531″44674
5/8″0.594″–0.656″44676
3/4″0.719″–0.781″44678
7/8″0.844″–0.906″44680
1″0.969″–1.031″44682
11/8″1.094″–1.156″44684
  • Semi-hard Quick-Grip™ emergency collets are designed to be machined in-place by the user to accommodate special sizes, shapes, steps, etc.
  • Available in assorted pilot hole sizes to minimize machining time.
  • Collets can be counter-bored beyond standard capacity, eliminating the need for a three-jaw chuck on many jobs. The chart below provides some basic counter-bore guidelines, but many other diameter/depth combinations are possible. Please contact us for additional information.
  • Boring fixture holds collet segments firmly in-place and puts collet under slight compression to ensure accuracy and roundness during machining. Order fixture separately.
Fits Chuck ModelPilot Hole SizePart Number
QG-425mm (0.20″)44187
15mm (0.59″)44188
30mm (1.18″)44189

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