helicoil tap
helicoil tap
(OP)
For some reason i'm having trouble on tapping for helicoil inserts. I have a 1/2-13 insert and putting it into 304SS as far as i can see online I need to drill a 0.53" hole and use a 1/2-13 STI tap. (first of all am I correct so far?)
I ruined a tap already, it appears the hole is a little too small.
I ruined a tap already, it appears the hole is a little too small.





RE: helicoil tap
Is it possible that you have a form tap? The minor before tapping would be 0.557 for a theoretical 75% thread.
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RE: helicoil tap
RE: helicoil tap