Conduit Reducers | McMaster-Carr

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47 Products

About Conduit

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

Medium-Wall (IMC) and Thick-Wall (RMC) Metal Conduit and Fittings

The industry standards, IMC and RMC conduit systems offer the most durable protection indoors, outdoors, and underground. Both types have the same outside diameter, so they use many of the same fittings. This interchangeability makes retrofits easier and reduces the parts you need to keep on hand.

Conduit Bushings

Threaded

Connection

Threaded internally and externally to connect two different-sized pieces of conduit.

Zinc-Plated Steel—The strength of steel with a plating that protects from occasional exposure to moisture.

	Conduit Connection
	Conduit Trade Size	Thread Type	Gender	For Conduit Type	Specs. Met		Each
Threaded Conduit Connection







				Zinc-Plated Steel

				3/4 × 1/2	NPSM	Male × Female	IMC, RMC	UL Listed	7514K31	00000


				1 × 1/2	NPSM	Male × Female	IMC, RMC	UL Listed	7514K32	0000
				1 × 3/4	NPSM	Male × Female	IMC, RMC	UL Listed	7514K33	0000
				1 1/4 × 1/2	NPSM	Male × Female	IMC, RMC	UL Listed	7514K34	0000
				1 1/4 × 3/4	NPSM	Male × Female	IMC, RMC	UL Listed	7514K35	0000
				1 1/4 × 1	NPSM	Male × Female	IMC, RMC	UL Listed	7514K36	0000
				1 1/2 × 1	NPSM	Male × Female	IMC, RMC	UL Listed	7514K43	0000
				2 × 1/2	NPSM	Male × Female	IMC, RMC	UL Listed	7514K37	00000
				2 × 3/4	NPSM	Male × Female	IMC, RMC	UL Listed	7514K38	00000
				2 × 1	NPSM	Male × Female	IMC, RMC	UL Listed	7514K39	00000
				2 × 1 1/4	NPSM	Male × Female	IMC, RMC	UL Listed	7514K41	00000


				2 × 1 1/2	NPSM	Male × Female	IMC, RMC	UL Listed	7514K42	00000

Reducing Washers

Shrink the size of knockouts in an electrical box so you can connect smaller sizes of conduit.

Galvanized Steel—These washers resist rust in wet environments and are used in pairs. Install one washer inside the box and one on the outside.

Galvanized Steel with Rubber-Coated Steel Gasket—These rust-resistant washers are paired with a gasket to block out moisture. The washer goes inside the box and the gasket on the outside to create the seal.

	For Conduit Type	Specs. Met	Pkg. Qty.		Pkg.
Galvanized Steel



	3/4 × 1/2	IMC, RMC	CSA Certified, UL Listed	10	7513K371	00000


	1 × 1/2	IMC, RMC	C-UL Listed, CSA Certified, UL Listed	10	7513K372	0000
	1 × 3/4	IMC, RMC	C-UL Listed, CSA Certified, UL Listed	10	7513K373	0000
	1 1/4 × 1/2	IMC, RMC	C-UL Listed, CSA Certified, UL Listed	10	7513K374	0000
	1 1/4 × 3/4	IMC, RMC	C-UL Listed, CSA Certified, UL Listed	10	7513K375	0000
	1 1/4 × 1	IMC, RMC	C-UL Listed, CSA Certified, UL Listed	10	7513K376	0000
	1 1/2 × 1	IMC, RMC	C-UL Listed, CSA Certified, UL Listed	10	7513K383	0000
	2 × 1/2	IMC, RMC	CSA Certified, UL Listed	10	7513K377	00000
	2 × 3/4	IMC, RMC	CSA Certified, UL Listed	10	7513K378	00000
	2 × 1	IMC, RMC	CSA Certified, UL Listed	10	7513K379	00000
	2 × 1 1/4	IMC, RMC	CSA Certified, UL Listed	10	7513K381	00000


	2 × 1 1/2	IMC, RMC	CSA Certified, UL Listed	10	7513K382	00000


	Galvanized Steel with Rubber-Coated Steel Gasket



			3/4 × 1/2	IMC, RMC	C-UL Listed, UL Listed, ANSI/NEMA FB 1	1	7513K221	0000


			1 × 1/2	IMC, RMC	C-UL Listed, UL Listed, ANSI/NEMA FB 1	1	7513K222	00000
			1 × 3/4	IMC, RMC	C-UL Listed, UL Listed, ANSI/NEMA FB 1	1	7513K223	00000
			1 1/4 × 1/2	IMC, RMC	C-UL Listed, UL Listed, ANSI/NEMA FB 1	1	7513K904	00000
			1 1/4 × 3/4	IMC, RMC	C-UL Listed, UL Listed, ANSI/NEMA FB 1	1	7513K224	00000
			1 1/4 × 1	IMC, RMC	C-UL Listed, UL Listed, ANSI/NEMA FB 1	1	7513K905	00000
			2 × 1/2	IMC, RMC	C-UL Listed, UL Listed, ANSI/NEMA FB 1	1	7513K225	00000

Rigid Plastic (PVC) Conduit and Fittings

A nonconductive and lightweight alternative to rigid metal conduit, PVC conduit won’t break down from moisture or chemicals. It protects runs of wiring outdoors, underground, or encased in concrete. PVC cement (not included) is required when joining conduit to fittings with push-in connections.

Straight Conduit Reducers

Push-In

Connection

Connect two different-sized pieces of conduit.

For 80 Pipe Schedule—With thicker walls than schedule 40, these fittings have better crush resistance to hold up where they may be struck or stepped on.

	Conduit Connection
	Conduit Trade Size	Gender	For Pipe Schedule	Color	Specs. Met		Each
Push-In Conduit Connection







				PVC

				3/4 × 1/2	Male × Female	40, 80	Gray	UL Listed	7945K61	00000


				1 × 1/2	Male × Female	40, 80	Gray	UL Listed	7945K62	0000
				1 × 3/4	Male × Female	40, 80	Gray	UL Listed	7945K63	0000
				1 1/4 × 3/4	Male × Female	40, 80	Gray	UL Listed	7945K64	0000
				1 1/4 × 1	Male × Female	40, 80	Gray	UL Listed	7945K65	0000
				1 1/2 × 1	Male × Female	40, 80	Gray	UL Listed	7945K66	0000
				1 1/2 × 1 1/4	Male × Female	40, 80	Gray	UL Listed	7945K67	0000
				2 × 1 1/4	Male × Female	40, 80	Gray	UL Listed	7945K68	00000
				2 × 1 1/2	Male × Female	40, 80	Gray	UL Listed	7945K69	00000
				2 1/2 × 2	Male × Female	40, 80	Gray	UL Listed	7945K84	00000
				3 × 2	Male × Female	40, 80	Gray	UL Listed	7945K85	00000


				4 × 3	Male × Female	40, 80	Gray	UL Listed	7945K86	00000

Conduit Adapters

Screw-Clamp

Conduit

Connection

For transition points in your run, these adapters link different conduit types.

Zinc Alloy—A good option for light duty applications that don't require high strength. These fittings resist occasional exposure to moisture.

	Conduit Connection
	Conduit Trade Size	Gender	For Conduit Flexibility	Material		Each
Screw-Clamp Conduit Connection







				EMT × FMC

				1/2 × 3/8	Female	Rigid × Flexible	Zinc Alloy	7984K1	00000

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.

Tee Conduit Reducers

Snap-In Connection

Take a run of conduit and branch it into two smaller ones at 90° angles.

	Temp., ° F	Enclosure Rating	Specs. Met		Each
Snap-In Conduit Connection







	Nylon

	1 × 3/4	Female	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T43	000000

Wye Conduit Reducers

Snap-In Connection

Take one run of conduit and branch it into two smaller ones, continuing in the same direction.

	Temp., ° F	Enclosure Rating	Specs. Met		Each
Snap-In Conduit Connection







	Nylon

	5/16 × 1/4	Female	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T42	000000


	3/8 × 5/16	Female	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T41	00000