EMT Box Connectors | McMaster-Carr

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Conduit Trade Size

Conduit Connection

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For Conduit Flexibility

Flexibility

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Certification

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

Yes

Finish

Zinc Plated

Performance

Choose-a-Color

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Highly Corrosion Resistant

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DFARS Specialty Metals

Exempt

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Offset Length

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122 Products

About Conduit

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

Conduit Type

RMC

The choice for maximum impact and crush resistance

3 products

FMC

Protect wiring from crushing as it makes tight bends

7 products

Conduit Type

LFMC

Prevent crushing and seal out moisture

3 products

Fitting Type

Reducer

Connect different-sized pieces of conduit

1 product

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.

Straight Electrical Box Connectors

Attach conduit to a knockout in an electrical box.

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

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.

	Straights										Locknuts
	Conduit Connection		Knockout Connection
	Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Includes	Specs. Met	Choose a Color		Each		Each
Compression Conduit Connection × Threaded Knockout Connection
Compression × Threaded






				Zinc-Plated Steel

				1/2	Female	1/2	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K24	00000	———	0


				1/2	Female	1/2	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K31	0000	———	0
				3/4	Female	3/4	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K25	0000	———	0
				3/4	Female	3/4	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K32	0000	———	0
				1	Female	1	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K26	0000	———	0
				1	Female	1	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K33	0000	———	0
				1 1/4	Female	1 1/4	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K51	0000	———	0
				1 1/4	Female	1 1/4	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K27	0000	———	0
				1 1/2	Female	1 1/2	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K52	0000	———	0
				1 1/2	Female	1 1/2	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K28	00000	———	0
				2	Female	2	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K53	0000	———	0


				2	Female	2	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K29	00000	———	0
				2 1/2	Female	2 1/2	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K111	00000	———	0
				2 1/2	Female	2 1/2	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K114	00000	———	0
				3	Female	3	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K112	00000	———	0
				3	Female	3	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K115	00000	———	0
				4	Female	4	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K113	00000	———	0
				4	Female	4	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K116	00000	———	0




						Zinc Alloy

						1/2	Female	1/2	NPSM	Male	Locknut, O-Ring	C-UL Listed, UL Listed	—	1841T11	0000	———	0


						1/2	Female	1/2	NPSM	Male	Locknut, Grommet, O-Ring	C-UL Listed, UL Listed	—	1841T21	0000	———	0
						1/2	Female	1/2	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K71	0000	———	0
						1/2	Female	1/2	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K11	0000	———	0
						3/4	Female	3/4	NPSM	Male	Locknut, O-Ring	C-UL Listed, UL Listed	—	1841T12	0000	———	0
						3/4	Female	3/4	NPSM	Male	Locknut, Grommet, O-Ring	C-UL Listed, UL Listed	—	1841T22	0000	———	0
						3/4	Female	3/4	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K72	0000	———	0
						3/4	Female	3/4	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K12	0000	———	0
						1	Female	1	NPSM	Male	Locknut, O-Ring	C-UL Listed, UL Listed	—	1841T13	0000	———	0
						1	Female	1	NPSM	Male	Locknut, Grommet, O-Ring	C-UL Listed, UL Listed	—	1841T23	0000	———	0
						1	Female	1	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K97	0000	———	0


						1	Female	1	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K13	0000	———	0
						1 1/4	Female	1 1/4	NPSM	Male	Locknut, O-Ring	C-UL Listed, UL Listed	—	1841T14	00000	———	0
						1 1/4	Female	1 1/4	NPSM	Male	Locknut, Grommet, O-Ring	C-UL Listed, UL Listed	—	1841T24	00000	———	0
						1 1/4	Female	1 1/4	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K87	0000	———	0
						1 1/4	Female	1 1/4	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K14	0000	———	0
						1 1/2	Female	1 1/2	NPSM	Male	Locknut, O-Ring	C-UL Listed, UL Listed	—	1841T15	00000	———	0
						1 1/2	Female	1 1/2	NPSM	Male	Locknut, Grommet, O-Ring	C-UL Listed, UL Listed	—	1841T25	00000	———	0
						1 1/2	Female	1 1/2	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K88	0000	———	0
						1 1/2	Female	1 1/2	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K15	0000	———	0
						2	Female	2	NPSM	Male	Locknut, O-Ring	C-UL Listed, UL Listed	—	1841T16	00000	———	0


2						Female	2	NPSM	Male	Locknut, Grommet, O-Ring	C-UL Listed, UL Listed	—	1841T26	00000	———	0
2	Female					2	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K89	00000	———	0
2	Female					2	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K16	00000	———	0
2 1/2	Female					2 1/2	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K311	00000	———	0
2 1/2	Female					2 1/2	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K314	00000	———	0
3	Female	3				NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K312	00000	———	0
3	Female	3	NPSM			Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K315	00000	———	0
4	Female	4	NPSM			Male	Locknut	CSA Certified, UL Listed	—	7150K313	00000	———	0
4	Female	4	NPSM			Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K316	00000	———	0




		316 Stainless Steel

		1/2	Female			1/2	NPT	Male	—	—	—	1843T11	00000	7513K317	000000


		3/4	Female			3/4	NPT	Male	—	—	—	1843T12	00000	7513K318	00000
		1	Female			1	NPT	Male	—	—	—	1843T13	00000	7513K319	00000
		1 1/4	Female			1 1/4	NPT	Male	—	—	—	1843T31	000000	7513K411	00000
		1 1/2	Female			1 1/2	NPT	Male	—	—	—	1843T32	000000	7513K412	00000
		2	Female			2	NPT	Male	—	—	—	1843T33	000000	7513K413	00000


		Screw-Clamp Conduit Connection × Threaded Knockout Connection
		Screw-Clamp × Threaded






								Zinc-Plated Steel

				1/2				Female	1/2	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K61	0000	———	0


				1/2	Female			1/2	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K34	0000	———	0
				1/2	Female			1/2	NPSM	Male	Locknut	UL Listed	Blue, Red	9150T22	0000	———	0
				3/4	Female			3/4	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K62	0000	———	0
				3/4	Female			3/4	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K35	0000	———	0
				3/4	Female			3/4	NPSM	Male	Locknut	UL Listed	Black, Blue, White, Red	9150T21	0000	———	0
				1	Female			1	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K63	0000	———	0
				1	Female			1	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K36	0000	———	0
				1	Female			1	NPSM	Male	Locknut	UL Listed	Blue, Red	9150T23	0000	———	0
				1 1/4	Female			1 1/4	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K64	0000	———	0
				1 1/4	Female			1 1/4	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K44	0000	———	0


				1 1/2	Female			1 1/2	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K65	0000	———	0
				1 1/2	Female			1 1/2	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K45	0000	———	0
				2	Female			2	NPSM	Male	Locknut, Grommet	C-UL Listed, UL Listed	—	7150K66	0000	———	0
				2	Female			2	NPSM	Male	Locknut	C-UL Listed, UL Listed	—	7150K46	00000	———	0
				2 1/2	Female			2 1/2	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K117	00000	———	0
				2 1/2	Female			2 1/2	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K211	00000	———	0
				3	Female			3	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K118	00000	———	0
				3	Female			3	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K212	00000	———	0
				4	Female			4	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K119	00000	———	0
				4	Female			4	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K213	00000	———	0




								Zinc Alloy

								1/2	Female	1/2	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K74	0000	———	0


								1/2	Female	1/2	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K17	0000	———	0
								3/4	Female	3/4	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K75	0000	———	0
								3/4	Female	3/4	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K18	0000	———	0
								1	Female	1	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K76	0000	———	0
								1	Female	1	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K19	0000	———	0
								1 1/4	Female	1 1/4	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K91	0000	———	0
1 1/4								Female	1 1/4	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K21	0000	———	0
1 1/2	Female							1 1/2	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K92	0000	———	0
1 1/2	Female							1 1/2	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K22	0000	———	0
2	Female							2	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K93	0000	———	0


2	Female							2	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K23	0000	———	0
2 1/2	Female							2 1/2	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K317	00000	———	0
2 1/2	Female							2 1/2	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K411	00000	———	0
3	Female							3	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K318	00000	———	0
3	Female							3	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K412	00000	———	0
4	Female							4	NPSM	Male	Locknut	CSA Certified, UL Listed	—	7150K319	00000	———	0
4	Female							4	NPSM	Male	Locknut, Grommet	CSA Certified, UL Listed	—	7150K413	00000	———	0




		316 Stainless Steel

		1/2	Female					1/2	NPT	Male	Locknut	—	—	1843T34	00000	———	0


		3/4	Female			3/4	NPT	Male	Locknut	—	—	1843T35	00000	———	0
		1	Female			1	NPT	Male	Locknut	—	—	1843T36	00000	———	0
		2	Female			2	NPT	Male	Locknut	—	—	1843T39	000000	———	0

90° Elbow Electrical Box Connectors

Compression ×

Threaded

Change the direction of your run to connect 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.

	Conduit Connection		Knockout Connection
	Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Includes	Specs. Met		Each
Compression Conduit Connection × Threaded Knockout Connection







				Zinc Alloy

				1/2	Female	1/2	NPSM	Male	Locknut	CSA Certified, UL Listed	8081K31	00000


				3/4	Female	3/4	NPSM	Male	Locknut	CSA Certified, UL Listed	8081K32	0000
				1	Female	1	NPSM	Male	Locknut	CSA Certified, UL Listed	8081K33	0000

Offset-Elbow Electrical Box Connectors

Screw-Clamp × Threaded

Attach conduit to an electrical box when the knockout and the run don’t line up.

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

	Conduit Connection		Knockout Connection
	Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Offset Lg.	Includes	Specs. Met		Each
Screw-Clamp Conduit Connection × Threaded Knockout Connection







				Zinc Alloy

				1/2	Female	1/2	NPSM	Male	3/8"	Locknut	CSA Certified, UL Listed	8081K41	00000


				3/4	Female	3/4	NPSM	Male	3/4"	Locknut	CSA Certified, UL Listed	8081K42	0000
				1	Female	1	NPSM	Male	1"	Locknut	UL Listed	8081K43	00000

Conduit Adapters


Compression × Threaded Conduit Connection	Compression × Twist-In Conduit Connection	Screw-Clamp Conduit Connection

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

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

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	Thread Type	Gender	For Conduit Flexibility	Material	Specs. Met		Each
Compression × Threaded Conduit Connection







				EMT × RMC

				1/2	NPT	Female	Rigid × Rigid	Zinc-Plated Steel	—	7984K21	00000


				3/4	NPT	Female	Rigid × Rigid	Zinc-Plated Steel	—	7984K22	0000
				1	NPT	Female	Rigid × Rigid	Zinc-Plated Steel	UL Listed	7984K14	00000


				Compression × Twist-In Conduit Connection







								EMT × FMC

								1/2	—	Female × Male	Rigid × Flexible	Zinc Alloy	UL Listed	7984K11	0000


								3/4	—	Female × Male	Rigid × Flexible	Zinc Alloy	UL Listed	7984K12	0000
								1	—	Female × Male	Rigid × Flexible	Zinc Alloy	UL Listed	7984K13	0000




										EMT × LFMC

										1/2	—	Female	Rigid × Flexible	Zinc-Plated Steel	UL Listed	7984K23	0000


										3/4	—	Female	Rigid × Flexible	Zinc-Plated Steel	UL Listed	7984K24	0000
										1	—	Female	Rigid × Flexible	Zinc-Plated Steel	UL Listed	7984K25	00000


										Screw-Clamp Conduit Connection







														EMT × FMC

														1/2 × 3/8	—	Female	Rigid × Flexible	Zinc Alloy	—	7984K1	0000


														1/2	—	Female	Rigid × Flexible	Zinc Alloy	UL Listed	7984K2	0000
														3/4	—	Female	Rigid × Flexible	Zinc Alloy	UL Listed	7984K3	0000
														1	—	Female	Rigid × Flexible	Zinc Alloy	UL Listed	7984K27	0000