Conduit Hubs | McMaster-Carr

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Conduit Trade Size

Material

Pipe Size

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Fitting Type

Conduit Type

Gender

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Environment

REACH

RoHS

Performance

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

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18 Products

About Conduit

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

Conduit Type

IMC

Thinner walls than RMC for less weight and more room for wiring

6 products

Performance

Corrosion Resistant

Won't rust in wet and outdoor environments

12 products

Performance

Chemical Resistant

Withstand exposure to most chemicals

12 products

Lightweight

Made of plastic or aluminum for easier handling

6 products

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.

Straight Electrical Box Connectors

Threaded ×

Threaded

Attach conduit to a knockout in an electrical box.

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

316 Stainless Steel—Our most corrosion-resistant fittings won't degrade when exposed to salt water and harsh chemicals.

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			Knockout Connection
	Conduit Trade Size	Thread Type	Gender	Pipe Size	Thread Type	Gender	For Conduit Type	Includes	Specs. Met		Each
Threaded Conduit and Knockout Connection







				Zinc Alloy

				1/2	NPT	Female	1/2	NPSM	Male	IMC, RMC	Locknut	C-UL Listed, CSA Certified, UL Listed	7513K81	00000


				3/4	NPT	Female	3/4	NPSM	Male	IMC, RMC	Locknut	C-UL Listed, CSA Certified, UL Listed	7513K82	00000
				1	NPT	Female	1	NPSM	Male	IMC, RMC	Locknut	C-UL Listed, CSA Certified, UL Listed	7513K83	00000
				1 1/4	NPT	Female	1 1/4	NPSM	Male	IMC, RMC	Locknut	C-UL Listed, CSA Certified, UL Listed	7513K84	00000
				1 1/2	NPT	Female	1 1/2	NPSM	Male	IMC, RMC	Locknut	C-UL Listed, CSA Certified, UL Listed	7513K85	00000
				2	NPT	Female	2	NPSM	Male	IMC, RMC	Locknut	C-UL Listed, CSA Certified, UL Listed	7513K86	00000




						316 Stainless Steel

						1/2	NPT	Female	1/2	NPSM	Male	RMC	Locknut	C-UL Listed, UL Listed	3403K31	000000


						3/4	NPT	Female	3/4	NPSM	Male	RMC	Locknut	C-UL Listed, UL Listed	3403K32	000000
						1	NPT	Female	1	NPSM	Male	RMC	Locknut	C-UL Listed, UL Listed	3403K33	000000
						1 1/4	NPT	Female	1 1/4	NPSM	Male	RMC	Locknut	C-UL Listed, UL Listed	3403K71	000000
						1 1/2	NPT	Female	1 1/2	NPSM	Male	RMC	Locknut	C-UL Listed, UL Listed	3403K72	000000
						2	NPT	Female	2	NPSM	Male	RMC	Locknut	C-UL Listed, UL Listed	3403K36	000000




								Aluminum

								1/2	NPT	Female	1/2	NPSM	Male	RMC	Locknut	—	7864T41	00000


								3/4	NPT	Female	3/4	NPSM	Male	RMC	Locknut	—	7864T42	00000
								1	NPT	Female	1	NPSM	Male	RMC	Locknut	—	7864T43	00000
								1 1/4	NPT	Female	1 1/4	NPSM	Male	RMC	Locknut	—	7864T44	00000
								1 1/2	NPT	Female	1 1/2	NPSM	Male	RMC	Locknut	—	7864T45	00000
								2	NPT	Female	2	NPSM	Male	RMC	Locknut	—	7864T46	00000