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Carbide tool bit inserts

Posted by bus_driver (My Page) on
Mon, Jul 31, 06 at 14:04

I bought a set of 5 tool bits from Harbor Freight- some call them Horrible Fright. My tool bits all use triangular inserts and are held in place with a screw that fits into a countersunk, through, hole in the center of the insert. HF does not offer inserts alone, as best I can determine. I have some TNMM-332 inserts which are close enough sized to work, but the hole diameter in the TNMM inserts is a bit too small for the screw and the TNMM is not countersunk. As far as I know, I have no way to drill the carbide hole larger. The HF inserts have no ID at all on them. Where can I find inserts for my bits?


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RE: Carbide tool bit inserts

Look in "Machinerie's Handbook".
They used to have the complete insert code in there and you can figure out what you are supposed to use.
A number of the larger insert companies also have pretty good catalogs.


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