STANDARD TAPS SPEED RECOMMENDATIONS
STANDARD TAPS SPEED RECOMMENDATIONS ... per Inch x of Thread – Drill Dia. = Full Thread ... for Class of Thread UNC UNF Class 2B Class 3B Minimum (Basic) Maximum Class 2B Maximum Class 3B 0 — 80 H2 H1 .0519 .0542 .0536 1 64 — H2 H1 .0629 .0655 .0648 1 — 72 H2 H1 .0640 .0665 .0659 ...
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