1/4-28 BH4 STI THREAD FORMING TAP

BOTTOM LEAD

SHANK DIAMETER .318"

MADE IN USA

12984

Pre-Tap Hole Sizes

55% Thread0.281
65% Thread0.279
75% Thread0.278
85% Thread0.276

For use in the installation of Helicoil, Recoil, etc.Screw Thread Inserts

 



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