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Pipe Thread Installation Torque Table Chart

Fluids, Piping and Hydraulic Design Data

Brass and steel Pipe thread (NPT) installation procedure and torque specification table and chart.

T.F.F.T = Assembly turns from finger tight with pipe thread sealant or teflon tape applied.

Pipe Thread Size NPTF	T.F.F.T.
1/8 - 27	2 - 3
1/4 - 18	2 - 3
3/8 - 18	2 - 3
1/2 -14	2 - 3
3/4 - 14	2 - 3
1 - 11 1/2
1 - 11 1/4	1.5 - 2.5
1  - 11 1/2	1.5 - 2.5
2  - 11 1/2	1.5 - 2.5

Torque

Size	in-lbs	Newtons-m
1/16"	5.0	0.57
1/8"	7.0	0.79
1/4"	16	1.81
3/8"	23	2.60
1/2"	30	3.39
3/4"	54	6.10
1"	78	8.81

 

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