HB 3692-1986 Short shank machine, hand screw tap with rear leading part for regular screw thread of through hole in ordinary steel machining d=3~5mm (English Version)
This standard is applicable to machines with back guides and hand taps for processing ordinary steel through-hole and non-through-hole ordinary threads (GB 192~193-1981, GB 196~197-1981) with verticality, position and coaxiality requirements. .
HB 3692-1986 history
1986HB 3692-1986 Short shank machine, hand screw tap with rear leading part for regular screw thread of through hole in ordinary steel machining d=3~5mm