FMC Fittings | McMaster-Carr

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	Conduit Type Conduit Type	Show

FMC

	Conduit Type Conduit Type	Hide

	Conduit Trade Size Conduit Trade Size

	Flexibility Flexibility

Flexible

Rigid

Bend and Stay

	Conduit Connection Type Conduit Connection Type


Push In	Twist In

Compression	Screw Clamp

Screw On

	Type Type

	Shape Shape

	90° Elbow
	Straight
	Wye

	Connection Type Connection Type


Conduit	Electrical Box

	Material Material

	Gender Gender

Male

Female

	Pipe Size Pipe Size

	For Conduit Material For Conduit Material

Metal

	Knockout Connection Type Knockout Connection Type

Threaded

Snap In

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Thread Type Thread Type

NPSM

NPT

	For Minimum Armored Cable OD For Minimum Armored Cable OD

	Specifications Met Specifications Met

CSA

	For Armored Cable Type For Armored Cable Type

	For Knockout Trade Size For Knockout Trade Size

1/2

3/4

	For Maximum Armored Cable OD For Maximum Armored Cable OD

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	UL File Number UL File Number

E9391

E20534

E101868

	For Armored Cable Gauge For Armored Cable Gauge

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91 Products

About Conduit

Adapters for Flexible Metal Conduit

Attach flexible metal conduit to a knockout in an outlet box or enclosure. The screw-on end screws onto the OD of conduit. The screw-clamp end tightens around conduit with a screw. The twist-in end attaches to conduit with a few quick turns.

Iron adapters are stronger and more durable than zinc adapters. Aluminum adapters provide some corrosion resistance. 316 stainless steel adapters are the most corrosion resistant.

For technical drawings and 3-D models, click on a part number.

Straight Adapters—Zinc

Screw-Clamp × Threaded

Twist-In × Threaded

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Specifications Met		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/4	Female	3/4	NPSM	Male	UL Listed, CSA Certified	0000000	00000
1	Female	1	NPSM	Male	UL Listed, C-UL Listed	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	UL Listed, C-UL Listed	0000000	00000
1 1/2	Female	1 1/2	NPSM	Male	UL Listed, C-UL Listed	0000000	00000
2	Female	2	NPSM	Male	UL Listed, C-UL Listed	0000000	00000
Twist-In Conduit Connection × Threaded Electrical Box Connection
3/8	Male	1/2	NPSM	Male	UL Listed, CSA Certified	0000000	0000
1/2	Male	1/2	NPSM	Male	UL Listed, CSA Certified	0000000	0000
3/4	Male	3/4	NPSM	Male	UL Listed, CSA Certified	0000000	0000
1	Male	1	NPSM	Male	UL Listed, CSA Certified	0000000	0000
1 1/4	Male	1 1/4	NPSM	Male	UL Listed, CSA Certified	0000000	00000
1 1/2	Male	1 1/2	NPSM	Male	UL Listed, CSA Certified	0000000	00000
2	Male	2	NPSM	Male	UL Listed, CSA Certified	0000000	00000

Straight Adapters—Iron

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Specifications Met		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	UL Listed	0000000	00000
1/2	Female	1/2	NPSM	Male	UL Listed	0000000	0000
3/4	Female	3/4	NPSM	Male	UL Listed	0000000	0000
1	Female	1	NPT	Male	UL Listed	0000000	00000
1 1/4	Female	1 1/4	NPT	Male	UL Listed	0000000	00000
1 1/2	Female	1 1/2	NPT	Male	UL Listed	0000000	00000
2	Female	2	NPT	Male	UL Listed	0000000	00000

Straight Adapters—Aluminum

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Specifications Met		Each
Screw-On Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPSM	Male	UL Listed, C-UL Listed	0000000	00000
3/4	Female	3/4	NPSM	Male	UL Listed, C-UL Listed	0000000	00000

Straight Adapters—Steel

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Specifications Met		Each
Screw-On Conduit Connection × Threaded Electrical Box Connection
3/8	Female	3/8	NPSM	Male	UL Listed, C-UL Listed	0000000	00000
1/2	Female	1/2	NPSM	Male	UL Listed, C-UL Listed	0000000	0000
3/4	Female	3/4	NPSM	Male	UL Listed, C-UL Listed	0000000	00000
1	Female	1	NPSM	Male	UL Listed, C-UL Listed	0000000	0000
2	Female	2	NPSM	Male	UL Listed, C-UL Listed	0000000	00000

Straight Adapters—316 Stainless Steel

Screw-Clamp × Threaded

Twist-In × Threaded

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	0000000	000000
1/2	Female	1/2	NPSM	Male	0000000	00000
3/4	Female	3/4	NPSM	Male	0000000	00000
1	Female	1	NPSM	Male	0000000	00000
1 1/4	Female	1 1/4	NPSM	Male	0000000	00000
Twist-In Conduit Connection × Threaded Electrical Box Connection
3/8	Male	1/2	NPSM	Male	0000000	00000
1/2	Male	1/2	NPSM	Male	0000000	00000
3/4	Male	3/4	NPSM	Male	0000000	00000
1	Male	1	NPSM	Male	0000000	00000
1 1/4	Male	1 1/4	NPSM	Male	0000000	00000

90° Elbow Adapters—Zinc

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Specifications Met		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	3/8	NPSM	Male	UL Listed, C-UL Listed	0000000	00000
1 1/2	Female	1 1/2	NPSM	Male	UL Listed, CSA Certified	0000000	00000
2	Female	2	NPSM	Male	UL Listed, CSA Certified	0000000	00000

90° Elbow Adapters—Iron

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Specifications Met		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	UL Listed	0000000	00000
1/2	Female	1/2	NPSM	Male	UL Listed	0000000	0000
3/4	Female	3/4	NPSM	Male	UL Listed	0000000	00000
1	Female	1	NPSM	Male	UL Listed	0000000	00000
1 1/4	Female	1 1/4	NPSM	Male	UL Listed	0000000	00000
1 1/2	Female	1 1/2	NPSM	Male	UL Listed	0000000	00000
2	Female	2	NPSM	Male	UL Listed	0000000	00000

90° Elbow Adapters—316 Stainless Steel

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	0000000	000000
1/2	Female	1/2	NPSM	Male	0000000	00000
3/4	Female	3/4	NPSM	Male	0000000	00000
1	Female	1	NPSM	Male	0000000	00000
1 1/4	Female	1 1/4	NPSM	Male	0000000	00000

Connectors for Flexible Metal Conduit

Twist these connectors into two pieces of flexible metal conduit for a quick connection.

Zinc connectors are for light duty applications. 316 stainless steel connectors have superior corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Conduit Connection
Conduit Trade Size	Conduit Connection Type	Gender	Specifications Met		Each
Zinc
1/2	Twist-In	Male	UL Listed, CSA Certified	0000000	00000
3/4	Twist-In	Male	UL Listed, CSA Certified	0000000	0000
1	Twist-In	Male	UL Listed, CSA Certified	0000000	0000
1 1/4	Twist-In	Male	UL Listed, CSA Certified	0000000	0000
1 1/2	Twist-In	Male	UL Listed, CSA Certified	0000000	0000
2	Twist-In	Male	UL Listed, CSA Certified	0000000	00000
316 Stainless Steel
1/2	Twist-In	Male	__	0000000	0000
3/4	Twist-In	Male	__	0000000	0000
1	Twist-In	Male	__	0000000	0000

Adapters for Flexible Metal Conduit and Armored Cable

Attach flexible metal conduit and types AC and MC armored cable to a knockout in an outlet box or enclosure. Wye adapters join two pieces of conduit or armored cable to one knockout. The snap-in end has tabs that snap into the knockout without locknuts or tools.

The screw-clamp end tightens around conduit with a screw.

For technical drawings and 3-D models, click on a part number.

Straight Adapters—Zinc

Screw-Clamp × Snap-In

Screw-Clamp
× Threaded—
With Two Screws

Screw-Clamp × Threaded

Push-In × Snap-In

Conduit Connection		For Armored Cable		Electrical Box Connection
Conduit Trade Size	Gender	OD	Type	Pipe Size	Thread Type	For Knockout Trade Size	Gender	Includes	Specifications Met		Each
Screw-Clamp Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	0.44"-0.61"	AC, MC	__	__	1/2	Male	__	UL Listed, CSA Certified	0000000	00000
1/2	Female	0.71"-0.91"	AC, MC	__	__	1/2	Male	__	UL Listed, CSA Certified	0000000	0000
3/4	Female	0.84"-1.11"	AC, MC	__	__	3/4	Male	__	UL Listed, CSA Certified	0000000	0000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	0.44"-0.61"	AC, MC	1/2	NPSM	__	Male	Locknut, Two Screws	UL Listed, CSA Certified	0000000	0000
3/8	Female	0.56"-0.61"	AC, MC	1/2	NPSM	__	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1/2	Female	0.86"-0.92"	AC	1/2	NPSM	__	Male	Locknut	UL Listed, CSA Certified	0000000	0000
Push-In Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	0.44"-0.61"	AC, MC	__	__	1/2	Male	__	UL Listed, CSA Certified	0000000	0000

90° Elbow Adapters—Zinc

Conduit Connection		For Armored Cable		Electrical Box Connection
Conduit Trade Size	Gender	OD	Type	Pipe Size	Thread Type	Gender	Includes	Specifications Met		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	0.45"-0.62"	MC	1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	00000
1/2	Female	0.75"-0.87"	MC	1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
3/4	Female	0.87"-1"	MC	3/4	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1	Female	1.18"-1.31"	MC	1	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	00000
1 1/4	Female	1.5"-1.62"	MC	1 1/4	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	00000

Wye Adapters—Zinc

Push-In × Snap-In

Screw-Clamp × Snap-In

Screw-Clamp × Threaded

Conduit Connection		For Armored Cable		Electrical Box Connection
Conduit Trade Size	Gender	OD	Type	Pipe Size	Thread Type	For Knockout Trade Size	Gender	Includes	Specifications Met		Each
Push-In Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	0.44"-0.61"	AC, MC	__	__	1/2	Male	__	UL Listed, CSA Certified	0000000	00000
Screw-Clamp Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	0.44"-0.61"	AC, MC	__	__	1/2	Male	__	UL Listed, CSA Certified	0000000	0000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	0.44"-0.61"	AC, MC	1/2	NPSM	__	Male	Locknut	UL Listed, CSA Certified	0000000	0000

Grommets for Flexible Metal Conduit and Armored Cable

Also known as antishort bushings, these grommets slide into the ends of conduit and types AC and MC armored cable to protect wire and cable from sharp edges.

For technical drawings and 3-D models, click on a part number.

Conduit Connection
Conduit Trade Size	Conduit Connection Type	Gender	For Armored Cable Gauge (Number of Wires)	For Armored Cable Type	Material	Color	Pkg. Qty.		Pkg.
5/16	Push-In	Female	14/2, 14/3, 12/2	AC, MC	Plastic	Red	100	0000000	000000
3/8	Push-In	Female	14/4, 12/3	AC, MC	Plastic	Red	100	0000000	00000
7/16	Push-In	Female	12/4, 10/2, 10/3	AC, MC	Plastic	Red	50	0000000	00000
1/2	Push-In	Female	10/4, 8/2, 8/3	AC, MC	Plastic	Red	50	0000000	00000
3/4	Push-In	Female	8/4, 6/2, 6/3	AC, MC	Plastic	Red	50	0000000	00000
1	Push-In	Female	1/3, 1/2, 1/0/2, 300 MCM (1), 350 MCM (1), 400 MCM (1), 450 MCM (1), 500 MCM (1)	AC, MC	Plastic	Red	1	00000000	0000
1 1/4	Push-In	Female	1/4, 1/0/4, 2/0/4, 1/0/3, 2/0/3, 3/0/3, 2/0/2, 3/0/2, 600 MCM (1), 650 MCM (1), 700 MCM (1), 750 MCM (1), 800 MCM (1), 900 MCM (1), 4/0/2	AC, MC	Plastic	Red	10	00000000	00000
1 1/2	Push-In	Female	3/0/4, 4/0/4, 250 MCM (3), 300 MCM (3), 250 MCM (2), 300 MCM (2), 350 MCM (2), 1000 MCM (1)	AC, MC	Plastic	Red	10	00000000	00000
2	Push-In	Female	250 MCM (4), 300 MCM (4), 350 MCM (4), 400 MCM (4), 450 MCM (4), 500 MCM (4), 350 MCM (3), 400 MCM (3), 450 MCM (3), 500 MCM (3), 400 MCM (2), 450 MCM (2), 500 MCM (2)	AC, MC	Plastic	Red	1	00000000	0000

Conduit Reducing Adapters

Transition between sizes and types of metal conduit. These reducing adapters have screw-clamp ends that tighten around conduit with screws.

For technical drawings and 3-D models, click on a part number.

Conduit Connection
Conduit Trade Size	Conduit Connection Type	Gender	For Conduit Type	For Conduit Flexibility	Material		Each
1/2 × 3/8	Screw-Clamp	Female	EMT × FMC	Rigid × Flexible	Zinc	000000	00000

Conduit Adapters

Compression × Twist-In Male

Screw-Clamp × Screw-Clamp

Transition between types of metal conduit.

A compression end offers a more reliable hold on conduit than a screw-clamp, twist-in, or threaded end. It pushes onto the conduit; tighten the compression ring to secure. The screw-clamp end tightens around conduit with a screw. The twist-in end attaches to conduit with a few quick turns.

For technical drawings and 3-D models, click on a part number.

Conduit Connection
Conduit Trade Size	Gender	For Conduit Flexibility	Material	Specifications Met		Each
For EMT × FMC
Compression × Twist-In
1/2 × 1/2	Female × Male	Rigid × Flexible	Zinc	UL Listed	0000000	00000
3/4 × 3/4	Female × Male	Rigid × Flexible	Zinc	UL Listed	0000000	0000
1 × 1	Female × Male	Rigid × Flexible	Zinc	UL Listed	0000000	0000
Screw-Clamp × Screw-Clamp
1/2 × 1/2	Female × Female	Rigid × Flexible	Zinc	UL Listed	000000	0000
3/4 × 3/4	Female × Female	Rigid × Flexible	Zinc	UL Listed	000000	0000
1 × 1	Female × Female	Rigid × Flexible	Zinc	UL Listed	0000000	0000