Boss Tool Works Manufacturers of quality workholding and machine tool accessories

5C, 16C & 3J Collet Chucks & Fixtures, 5 Axis Workholding, Rotary Table & Wire EDM Workholding Products
Vise Jaws, Keys, & Fixture Clamps, Mill Stops and THE MILL BOSS

Boss Tool Works
1288 Hickory Street
Pewaukee, Wisconsin 53072
262-691-8938 Fax

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Thank you all for coming to see us at the 2016 IMTS Show!


5C, 16C, and 3J Collet Blocks

  • In square and hex bodies 5C, 16C, and 3J. Standard ring closer included with all blocks. Made from heat treated steel. Square and parallel to +/- .0005". Great for quick set ups on the mill or grinder. Sold in sets or separately. Made in U.S.A. by BOSS TOOL WORKS.

5C Emergency Collet Stainless Steel

  • Emergency style stainless steel. Machine or wire the diameter or shape you need and toss those rusty steel collets away. Made in U.S.A by BOSS TOOL WORKS.

5C Dual Axis 2664 Index

  • Mounts to a 6" vise. A and B axis with 2664 preset positions

5C Wire EDM 72 Index

16C Wire EDM 72 Index

5C Collet Stop Kit Stainless Steel

How to Install a Collet

Boss Tool Work's own Randy Bernhardt has put together a clear 4-step guide on how to install a collet into a Boss Tool Works workblock.