Tools & Gear Taps & Dies Chrome Alloy Taps

4246-1T 1" x 11 BSPF Taper Chrome Tap Chrome Alloy BSPF (G Series) Taper Hand Tap. Used as thread chasers to clean an existing thread. They can also be used to create a new female thread in non-ferrous metals and plastics. Chrome alloy taps are not suitable for creating precision, safety or critical threads. British Standard Pipe (G Series) is a pipe thread which is used mainly for mechanical coupling. The angle of thread is mainly 55° however for the US method some threads have a 60° angle. It is specified according to JIS and ISO R228. Taper Taps have a lead of eight threads and are used as a starting tap in difficult or high precision holes.