M20 Conduit | McMaster-Carr

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EAR99

For Conduit Flexibility

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20 Products

About Conduit

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

Flexible Plastic (MPT) Conduit and Fittings

Bend, twist, and wrap machine wiring through tight spaces. Corrugated like ENT, this conduit is more resilient against repeated flexing. Pair it with compatible fittings to seal out liquid and protect wiring indoors and outdoors. Conduit and fittings are made of nylon to resist moisture and chemicals.

Straight Electrical Box Connectors

Snap-In ×

Threaded

Attach conduit to a knockout in an electrical box.

	Straights										Locknuts
	Conduit Connection		Knockout Connection
	Conduit Trade Size	Gender	Thread Type	Gender	Color	Temp., ° F	Enclosure Rating	Specs. Met		Each		Each
Snap-In Conduit Connection × Threaded Knockout Connection







				Nylon

				1/2	Female	Metric (M20)	Male	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T95	00000	7877N13	00000

45° Elbow Electrical Box Connectors

Snap-In × Threaded

Change the direction of your run to connect to a knockout in an electrical box.

	Elbows										Locknuts
	Conduit Connection		Knockout Connection
	Conduit Trade Size	Gender	Thread Type	Gender	Color	Temp., ° F	Enclosure Rating	Specs. Met		Each		Each
Snap-In Conduit Connection × Threaded Knockout Connection







				Nylon

				3/8	Female	Metric (M20)	Male	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T65	000000	7877N13	00000


				1/2	Female	Metric (M20)	Male	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T66	00000	7877N13	0000

90° Elbow Electrical Box Connectors

Snap-In ×

Threaded

Change the direction of your run to connect to a knockout in an electrical box.

	Elbows											Locknuts
	Conduit Connection		Knockout Connection
	Conduit Trade Size	Gender	Thread Type	Gender	Lg.	Color	Temp., ° F	Enclosure Rating	Specs. Met		Each		Each
Snap-In Conduit Connection × Threaded Knockout Connection







				Nylon

				3/8	Female	Metric (M20)	Male	2 7/16"	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T82	000000	7877N13	00000


				1/2	Female	Metric (M20)	Male	2"	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T49	00000	7877N13	0000
				1/2	Female	Metric (M20)	Male	2 7/8"	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T83	00000	7877N13	0000

Conduit and Cord Grip Thread Adapters

Connect mismatched conduit and cord grip threads while sealing out moisture. These adapters have a rubber O-ring that prevents water damage inside your electrical box or enclosure. They convert metric, NPT, and PG threads.

Nickel-Plated Brass—The plating enhances the corrosion resistance of brass, adding a durable protective finish.

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

	Conduit Connection			Knockout Connection
	Pipe Size	Thread Size	Gender	Thread Size	Gender	Temp., ° F		Each
NPT × Metric







				Nickel-Plated Brass

				1/2	—	Female	M20	Male	-40 to 210	7537K2	000000




						Nylon

						1/2	—	Female	M20	Male	0 to 175	7805K56	00000


						Metric × PG







										Nickel-Plated Brass

										—	M20	Female	PG-11	Male	-40 to 210	7805K19	0000


										—	M20	Female	PG-13.5	Male	-40 to 210	7805K21	0000




												Nylon

												—	M20	Female	PG-16	Male	0 to 175	7805K42	00000


												PG × Metric







																Nickel-Plated Brass

																—	PG-16	Female	M20	Male	-40 to 210	7805K14	00000

EMI-Shielding Flexible Plastic (MPT) Conduit and Fittings

A braided copper cover defends against electromagnetic interference (EMI) that can distort or disrupt signals. Install shielded MPT in areas where motors, generators, and other equipment that emit EMI are running. It has a corrugated nylon core that flexes to make tight bends and is typically used indoors. Pair conduit with nickel-plated brass connectors for a fully shielded run.

Straight Electrical Box Connectors

Compression

× Threaded

Attach conduit to a knockout in an electrical box.

	Straights								Locknuts
	Conduit Connection		Knockout Connection
	Conduit Trade Size	Gender	Thread Type	Gender	Temp., ° F	Enclosure Rating		Each		Each
Compression Conduit Connection × Threaded Knockout Connection







				Nickel-Plated Brass

				1/2	Female	Metric (M20)	Male	-40 to 245	IP66	9147T13	000000	9147T19	00000

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 Metal and Plastic Fittings

304 Stainless Steel—The choice for wet and outdoor environments.

Nickel-Plated Brass—The plating enhances the corrosion resistance of brass, adding a durable protective finish.

	Each
Metric Thread







	304 Stainless Steel

	M20	—	7513K135	000000




			Nickel-Plated Brass

			M20	EN 60204	9147T19	0000

For Plastic Fittings

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


Metric Thread







	Nylon

	M20	7877N113	00000


	M20	7877N13	0000

Clamping U-Bolts

With Plastic Mounting

Plate

Also known as muffler clamps, these U-bolts have a rounded mounting plate that fully surrounds pipe, conduit, and tubing for a secure fit. Stronger than routing clamps and hangers, U-bolts support heavy pipe, tube, and conduit from ceilings, walls, and poles.

Zinc-Plated Steel—Zinc-plated steel U-bolts have good corrosion resistance in most environments.

4 Nuts Included—U-bolts with four nuts allow you to secure the U-bolt from the top and the bottom.

	ID				Thread				Mounting Plate
	Inch	Metric, mm	For Pipe Size	Ht.	Lg.	Pitch, mm	Wt. Cap., lb.	Ctr.-to-Ctr.	Material	Color	Lg.	Wd.	Thk.	No. of Nuts Included	Temp. Range, ° F	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				M20 Threads

				8.75"	222	8	11 7/16"	4 15/16"	2.5	2,400	9 3/4"	Plastic	Green	12 3/8"	2"	31/32"	4	-20 to 190	1	3066T102	000000


				10.875"	276	10	13 9/16"	4 15/16"	2.5	4,300	11 7/8"	Plastic	Green	14 9/16"	2"	31/32"	4	-20 to 190	1	3066T103	00000
				12.9375"	329	12	15 11/16"	4 15/16"	2.5	9,500	13 7/8"	Plastic	Green	16 9/16"	2 3/8"	1 3/16"	4	-20 to 190	1	3066T104	000000