UNC BSW 0# 2# 4# 6# 8# 3/16 1/4 5/16 Thread Machine Tap Screw Taper HSS Plug Tap

Standard: UNC、BSW. (BSW) 1/8-40. (BSW) 5/32-32. (BSW) 3/16-24. (BSW) 1/4-20. (BSW) 5/16-18. (BSW) 3/8-16. (BSW) 1/2-12.

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