YMW - 386804 ZELX HP-RZ H3 4-40 (B) Zelx HP-RZ Roll Taps
Taps have a TiCN coating for tapping with coolant.
HP-RZ Roll taps can be run 2 times faster than the tapping speeds recommended for thread cutting taps.
Thread Length: 0.433
Thread Type: UNC
Thread Class: Cutting Direction: R/H