Heyco® Nylon Liquid Tight Threaded Plugs Torque chart

NPT threads require thread sealant
Plug Size	Torque
1/4 NPT	20in-lbs
PG 7
M12
3/8 NPT	38in-lbs
PG 9
M16
1/2 NPT	45in-lbs
PG 13.5
M20
3/4 NPT	80in-lbs
PG 21
1 NPT	100in-lbs
PG 29
M32
1-1/4 NPT	170in-lbs
PG 36
M40

Due to variations in thread tapers, materials, manufacturing tolerances and thread sealants, torque values are provided as a guideline only. We recommend you determine the actual torque empirically, testing for your specific application.