√99以上 1/4-20 unc 295931-1/4 20 unc tap set
Tap size NF/NC UNF/UNC Threads per inch Basic major dia (inches) Basic effective dia (inches) Basic minor dia of ext threads (inches) Basic minor dia of int threads (inches)Product Compare (0) Sort By Show Vermont Gage 1/4 UNC 2B TAPERLOCK Thread Plug Gage, Go Member Only Vermont Gage 1/4 UNC 2B TAPERLOCK Thread Plug Gage, Go Member Only5/1624UNF 'I'27 5/16 or O 21/64; Yg1 403 1 4 Unc Vanadium Alloy Hss Hand Tap Bottom Chamfer H3 Bright Finish All Industrial Tool Supply 1/4 20 unc tap set