Straight Pipe Thread Gages (NPSM)

Inch

Nominal SizeHandle Size
1/8 – 272
1/4 – 183
3/8 – 183
1/2 – 144
3/4 – 144
1 – 11-1/25
1-1/4 – 11-1/26
1-1/2 – 11-1/26
2 – 11-1/26
2-1/2 – 87
3 – 87

Inch

Nominal Size
1/18 – 27
1/4 – 18
3/8 – 18
1/2 – 14
3/4 – 14
1 – 11-1/2
1-1/4 – 11-1/2
1-1/2 – 11-1/2
2 – 11-1/2
2-1/2 – 8
3 – 8

Inch

Nominal SizeHandle Size
1/18 – 272
1/4 – 183
3/8 – 183
1/2 – 144
3/4 – 144
1 – 11-1/25
1-1/4 – 11-1/26
1-1/2 – 11-1/26
2 – 11-1/26
2-1/2 – 87
3 – 87

Consult factory for information on:

  • NPSC
  • NPSH & NH
  • NPSF & NPSI

Plug

Class 2B

Ring & Settings Plug

Class 2A