Reducer Conduit | McMaster-Carr

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NEC Zone 1 Groups IIC, IIB, IIA

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56 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.

Aluminum—One-third the weight of steel that's the same size. Aluminum is also nonmagnetic to prevent electrical interference in nearby equipment.

	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




						Aluminum

						3/4 × 1/2	NPT	Male × Female	RMC	UL Listed	7864T21	0000


						1 × 1/2	NPT	Male × Female	RMC	UL Listed	7864T22	0000
						1 × 3/4	NPT	Male × Female	RMC	UL Listed	7864T23	0000
						1 1/4 × 1/2	NPT	Male × Female	RMC	UL Listed	7864T24	0000
						1 1/4 × 3/4	NPT	Male × Female	RMC	UL Listed	7864T25	0000
						1 1/4 × 1	NPT	Male × Female	RMC	UL Listed	7864T26	0000
						1 1/2 × 3/4	NPT	Male × Female	RMC	UL Listed	7864T27	00000
						1 1/2 × 1	NPT	Male × Female	RMC	UL Listed	7864T28	00000
						2 × 3/4	NPT	Male × Female	RMC	UL Listed	7864T29	00000
						2 × 1	NPT	Male × Female	RMC	UL Listed	7864T31	00000
						2 × 1 1/4	NPT	Male × Female	RMC	UL Listed	7864T32	00000


						2 × 1 1/2	NPT	Male × Female	RMC	UL Listed	7864T33	00000

Hazardous Location Conduit Bushings

Threaded

Connection

Join different sizes of threaded conduit in areas where gas, dust, and fibers could cause a fire or explosion if they entered the system.

Aluminum—One-third the weight of steel that's the same size. Aluminum is also nonmagnetic to prevent electrical interference in nearby equipment.

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







				Aluminum

				3/4 × 1/2	NPT	Male × Female	RMC	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIC, IIB, IIA	CSA Certified, UL Listed	7862T41	00000


				1 × 1/2	NPT	Male × Female	RMC	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIC, IIB, IIA	CSA Certified, UL Listed	7862T42	0000
				1 × 3/4	NPT	Male × Female	RMC	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIC, IIB, IIA	CSA Certified, UL Listed	7862T43	0000
				1 1/4 × 1/2	NPT	Male × Female	RMC	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIC, IIB, IIA	CSA Certified, UL Listed	7862T44	00000
				1 1/4 × 3/4	NPT	Male × Female	RMC	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIC, IIB, IIA	CSA Certified, UL Listed	7862T45	00000
				1 1/4 × 1	NPT	Male × Female	RMC	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIC, IIB, IIA	CSA Certified, UL Listed	7862T46	00000
				1 1/2 × 1	NPT	Male × Female	RMC	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIC, IIB, IIA	CSA Certified, UL Listed	7862T47	00000
				2 × 1	NPT	Male × Female	RMC	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIC, IIB, IIA	CSA Certified, UL Listed	7862T48	00000
				2 × 1 1/2	NPT	Male × Female	RMC	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIC, IIB, IIA	CSA Certified, UL Listed	7862T49	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
	1/2 × 3/8	Female	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T33	00000
	3/4 × 1/2	Female	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T34	00000
	1 × 3/4	Female	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T35	00000
	1 1/4 × 1	Female	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T36	00000
	1 1/2 × 1 1/4	Female	Black	-40 to 245	IP68, IP69K	UL Recognized Component, UL 94 V-0	6963T37	00000

Thin-Wall (EMT) Metal Conduit and Fittings

With a thinner wall, this conduit is a lighter alternative to IMC and RMC. The most common choice for indoor walls and ceilings, it shields wiring from scrapes and bumps. EMT can dent or crush from impact, however, so it should be routed away from high‑traffic areas where carts and vehicles pass through.

Wye Conduit Reducers

Screw-Clamp

Connection

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

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

		Each
Screw-Clamp Conduit Connection







	Zinc Alloy

	3/4 × 1/2	Female	C-UL Listed, UL Listed	8081K81	000000


	1 × 3/4	Female	C-UL Listed, UL Listed	8081K82	00000