NPTF & ANPT Gages

Inch

Nominal SizeThreads per inchHandle Size
1/16271
1/8272
1/4183
3/8183
1/2144
3/4144
111.55
1 – 1/411.55
1 – 1/211.55
211.55

Inch

Nominal SizeThreads per inch
1/1627
1/827
1/418
3/818
1/214
3/414
111.5
1 – 1/411.5
1 – 1/211.5
211.5

L1 & L3 thread plugs are supplied with one step as standard.

Add 10% for hard chrome gages

Plug

L1, L3, 6 Step

Ring

L1, L2, 6 Step