Plastic Conduit Fitting Locknuts

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51 Products

About Conduit

Compare rigid and flexible conduit materials and identify the trade size for compatible fittings.

Conduit Locknuts

Secure threaded conduit fittings to knockouts. These locknuts keep fittings from shifting, so connections stay stable and wiring is protected inside electrical boxes or enclosures.

For Plastic Fittings

PVC and Nylon—Lightweight and chemical resistant, these fittings won't corrode.

	Pipe Size	Thread Size	Specs. Met		Each
NPT Thread







				Nylon

				1/4	—	—	7877N101	00000


				1/4	—	—	7877N102	0000
				3/8	—	—	3185K111	0000
				3/8	—	—	7877N103	0000
				1/2	—	—	3185K112	0000
				1/2	—	—	7877N104	0000
				3/4	—	—	3185K113	0000
				3/4	—	—	7877N105	0000
				1	—	—	3185K114	0000
				1	—	—	7877N106	0000
				1 1/4	—	—	3185K115	0000


				1 1/4	—	—	7877N107	0000
				1 1/2	—	—	3185K116	0000
				1 1/2	—	—	7877N108	0000
				2	—	—	3185K117	00000
				2	—	—	7877N109	00000


				NPSM Thread







								PVC

								1/2	—	UL Recognized Component	7945K81	0000


								3/4	—	UL Recognized Component	7945K82	0000
								1	—	UL Recognized Component	7945K83	0000


								PG Thread







												Nylon

												—	PG-7	—	7877N11	0000


												—	PG-7	—	7877N116	0000
												—	PG-9	—	7877N117	0000
												—	PG-9	—	7877N118	0000
—												PG-11	—	3185K91	0000
—	PG-11											—	7877N119	0000
—	PG-13.5											—	3185K92	0000
—	PG-13.5											—	7877N12	0000
—	PG-16											—	3185K93	0000
—	PG-16	—										7877N121	0000
—	PG-21	—	3185K94									0000


—	PG-21	—	7877N122									0000
—	PG-29	—	3185K95									0000
—	PG-29	—	7877N123									0000
—	PG-36	—	3185K96									00000
—	PG-36	—	7877N124									00000
—	PG-48	—	3185K133									00000


Metric Thread







												Nylon

												—	M12	—	7877N126	0000


												—	M12	—	7877N127	0000
												—	M16	—	7877N128	0000
												—	M16	—	7877N129	0000
				—								M20	—	7877N113	0000
				—	M20							—	7877N13	0000
				—	M25							—	7877N131	0000
				—	M25							—	7877N132	0000
				—	M32	—						7877N133	0000
				—	M32	—	7877N134					0000
				—	M40	—	7877N114					0000


				—	M40	—	7877N135					0000
				—	M50	—	7877N115					00000
				—	M63	—	7877N137					00000
				—	M63	—	7877N138					00000