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

National Pipe Taper 60° : NPT - NPTF
Straight Pipe Mechanical : NPSM
Straight Pipe : NPSF - NPSI
British Straight Pipe : BSP - G - Rp - BSF
British Pipe Taper : BSPT - R

Triangular threading inserts

Pipe thread : API RD

EUROPE

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

National Pipe Taper 60° : NPT - NPTF
Straight Pipe Mechanical : NPSM
Straight Pipe : NPSF - NPSI
British Straight Pipe : BSP - G - Rp - BSF
British Pipe Taper : BSPT - R

Triangular threading inserts

British Straight Pipe : W (BSW) BSP – G – Rp – BSF
British Pipe Taper : BSPT – R
Knuckle thread : RD
National Pipe Taper 60° : NPT – NPTF
Pipe thread : API RD – API V-0.040/V-0.038R/V-0.050 – API BUT – VAM – EL