Pipe Threads per Inch (in)

Written by Matt Milbury. Posted in Thread Datasheets

Pipe Threads per Inch Datasheet

Pipe Nipple

Pipe

Size

(NPS)

Threads per Inch
External

Threads

Internal

Threads

1/16 27 27
1/8 27 27
1/4 18 18
3/8 18 18
1/2 14 14
3/4 14 14
1 11 1/2 11 1/2
1 1/4 11 1/2 11 1/2
1 1/2 11 1/2 11 1/2
2 11 1/2 11 1/2
2 1/2 8 8
3 8 8
3 1/2 8 8
4 8 8
5 8 8
6 8 8
8 8 8
10 8 8
12 8 8