Unified Unf 1/2 X 20 Serial Form Tap Set 1/2
- Condition: New
Seller notes
Untitled DocumentUnified UNF 1/2 x 20 Serial Form Tap Set 1/2 Taps are to din 2181 HSS-G Tolerance 2B This form of Hand Tap consists of 2 taps for UNF threads made up of a Roughing Tap and a Finishing tap (see below for more information). This form of tap is ideal for tougher materials because the thread is formed in stages as opposed to NON serial taps which form the thread in one pass and use the conventional Taper Second and plug. The roughing tap which takes out half the thread area...
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