Pipe industry
USA
Solid carbide thread mills
National Pipe Taper 60° : NPT - NPTF
Straight Pipe Mechanical : NPSM
Straight Pipe : NPSF - NPSI
British Straight Whitworth : BSW
British Straight Pipe : BSP - G - Rp - BSF
British Pipe Taper : BSPT - R
Knuckle thread : RD
Electric tube thread : PG
Thread mill inserts
Straight Pipe Mechanical : NPSM
Straight Pipe : NPSF - NPSI