Soft Blank Top Jaws
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Number one in workholding, and in top jaws.
NOTE: You can machine and form Cushman
top jaws for use on all chucks
with American Standard, tongue and groove jaw design.
![](images/serrated_masterkey.gif)
American Standard - Serrated Acme
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American Standard Tongue and Groove - Long Pointed
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American Standard Tongue and Groove - Rectangular