EMT Box Connectors | McMaster-Carr

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Conduit Trade Size

Conduit Connection

Shape

Pipe Size

Connects To

Material

Fitting Connection

Conduit Type

Gender

Knockout Connection

Environment

For Conduit Flexibility

Thread Type

Color

Certification

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

Yes

Export Control Classification Number (ECCN)

RoHS

DFARS Specialty Metals

REACH

For Conduit Material

Offset Length

UL File Number

115 Products

About Conduit

Adapters for Thin-Wall (EMT) Steel Conduit

Use these adapters to attach thin-wall (EMT) steel conduit to a knockout in an outlet box or enclosure. A compression end offers a more reliable hold on conduit than a screw-clamp end. It pushes onto the conduit; tighten the compression ring to secure. The screw-clamp end tightens around conduit with a screw.

Adapters with grommet protect wire and cable from abrasion when being pulled.

Adapters with O-ring prevent liquid from entering the conduit. They meet UL raintight standards when used with EMT conduit.

Straight Adapters—Zinc

Compression

Screw-Clamp

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Includes	Specifications Met		Each
Compression Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	00000
1/2	Female	1/2	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	0000000	0000
1/2	Female	1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1/2	Female	1/2	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	0000000	0000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	0000000	0000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
3/4	Female	3/4	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	0000000	0000
1	Female	1	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
1	Female	1	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	0000000	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1	Female	1	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	0000000	00000
1 1/4	Female	1 1/4	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	0000000	00000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	0000000	00000
1 1/2	Female	1 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1 1/2	Female	1 1/2	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	0000000	00000
2	Female	2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	00000
2	Female	2	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	0000000	00000
2	Female	2	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	00000
2	Female	2	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	0000000	00000
2 1/2	Female	2 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	00000000	00000
2 1/2	Female	2 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	00000000	00000
3	Female	3	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	00000000	00000
3	Female	3	NPSM	Male	Locknut	UL Listed, CSA Certified	00000000	00000
4	Female	4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	00000000	00000
4	Female	4	NPSM	Male	Locknut	UL Listed, CSA Certified	00000000	00000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
1/2	Female	1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1	Female	1	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
1 1/2	Female	1 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
2	Female	2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	0000000	0000
2	Female	2	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
2 1/2	Female	2 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	00000000	00000
2 1/2	Female	2 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	00000000	00000
3	Female	3	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	00000000	00000
3	Female	3	NPSM	Male	Locknut	UL Listed, CSA Certified	00000000	00000
4	Female	4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	00000000	00000
4	Female	4	NPSM	Male	Locknut	UL Listed, CSA Certified	00000000	00000

Straight Adapters—Steel

Compression

Screw-Clamp

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Includes	Specifications Met		Each
Compression Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	00000
1/2	Female	1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	0000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	0000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	0000
1	Female	1	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	0000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	00000
1 1/2	Female	1 1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	0000
2	Female	2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	00000
2	Female	2	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	0000
2 1/2	Female	2 1/2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	00000000	00000
2 1/2	Female	2 1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	00000000	00000
3	Female	3	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	00000000	00000
3	Female	3	NPSM	Male	Locknut	UL Listed, C-UL Listed	00000000	00000
4	Female	4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	00000000	00000
4	Female	4	NPSM	Male	Locknut	UL Listed, C-UL Listed	00000000	00000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	000
1/2	Female	1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	0000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	000
1	Female	1	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	0000
1 1/4	Female	1 1/4	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	0000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	0000
1 1/2	Female	1 1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	0000
2	Female	2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	0000000	0000
2	Female	2	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	00000
2 1/2	Female	2 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	00000000	00000
2 1/2	Female	2 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	00000000	00000
3	Female	3	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	00000000	00000
3	Female	3	NPSM	Male	Locknut	UL Listed, CSA Certified	00000000	00000
4	Female	4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	00000000	00000
4	Female	4	NPSM	Male	Locknut	UL Listed, CSA Certified	00000000	00000

90° Elbow Adapters—Zinc

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Includes	Specifications Met		Each
Compression Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	00000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, CSA Certified	0000000	0000

Offset Elbow Adapters—Zinc

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Offset Lg.	Includes	Specifications Met		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPSM	Male	3/8"	Locknut	UL Listed, CSA Certified	0000000	00000
3/4	Female	3/4	NPSM	Male	3/4"	Locknut	UL Listed, CSA Certified	0000000	0000
1	Female	1	NPSM	Male	1"	Locknut	UL Listed	0000000	00000

Adapters for Choose-a-Color Thin-Wall (EMT) Steel Conduit

Use these adapters to attach choose-a-color thin-wall (EMT) steel conduit to a knockout in an outlet box or enclosure. The screw-clamp end tightens around conduit with a screw.

Conduit Connection			Electrical Box Connection
Conduit Trade Size	Conduit Connection Type	Gender	Pipe Size	Thread Type	Gender	Material	Specifications Met	Choose a Color		Each
1/2	Screw-Clamp	Female	1/2	NPSM	Male	Steel	UL Listed	Blue, Red	0000000	00000
3/4	Screw-Clamp	Female	3/4	NPSM	Male	Steel	UL Listed	Black, Blue, Red, White	0000000	0000
1	Screw-Clamp	Female	1	NPSM	Male	Steel	UL Listed	Blue, Red	0000000	0000

Adapters for Thin-Wall (EMT) Stainless Steel Conduit

Compression
Conduit × Threaded
Electrical Box Adapter

Screw-Clamp
Conduit × Threaded
Electrical Box Adapter

Attach thin-wall (EMT) stainless steel conduit to a knockout in an outlet box or enclosure. All of these adapters are corrosion resistant, so you can use them in food-processing and chemical plants.

A compression end offers a more reliable hold on conduit than a screw-clamp end. It pushes onto the conduit; tighten the compression ring to secure. The screw-clamp end tightens around conduit with a screw.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Material		Each
Compression Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPT	Male	316 Stainless Steel	0000000	000000
3/4	Female	3/4	NPT	Male	316 Stainless Steel	0000000	00000
1	Female	1	NPT	Male	316 Stainless Steel	0000000	00000
1 1/4	Female	1 1/4	NPT	Male	316 Stainless Steel	0000000	000000
1 1/2	Female	1 1/2	NPT	Male	316 Stainless Steel	0000000	000000
2	Female	2	NPT	Male	316 Stainless Steel	0000000	000000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPT	Male	316 Stainless Steel	0000000	00000
3/4	Female	3/4	NPT	Male	316 Stainless Steel	0000000	00000
1	Female	1	NPT	Male	316 Stainless Steel	0000000	00000
2	Female	2	NPT	Male	316 Stainless Steel	0000000	000000

Conduit Adapters

Compression × Twist-In Male

Screw-Clamp × Screw-Clamp

Compression × Twist-In Female

Compression × Threaded

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.

Conduit Connection
Conduit Trade Size	Pipe Size	Thread Type	Gender	For Conduit Flexibility	Material	For Conduit Material	Specifications Met		Each
For EMT × FMC
Compression × Twist-In
1/2 × 1/2	__	__	Female × Male	Rigid × Flexible	Zinc	Metal	UL Listed	0000000	00000
3/4 × 3/4	__	__	Female × Male	Rigid × Flexible	Zinc	Metal	UL Listed	0000000	0000
1 × 1	__	__	Female × Male	Rigid × Flexible	Zinc	Metal	UL Listed	0000000	0000
Screw-Clamp × Screw-Clamp
1/2 × 1/2	__	__	Female × Female	Rigid × Flexible	Zinc	Metal	UL Listed	000000	0000
3/4 × 3/4	__	__	Female × Female	Rigid × Flexible	Zinc	Metal	UL Listed	000000	0000
1 × 1	__	__	Female × Female	Rigid × Flexible	Zinc	Metal	UL Listed	0000000	0000
For EMT × LFMC
Compression × Twist-In
1/2 × 1/2	__	__	Female × Female	Rigid × Flexible	Steel	Metal	UL Listed	0000000	0000
3/4 × 3/4	__	__	Female × Female	Rigid × Flexible	Steel	Metal	UL Listed	0000000	0000
1 × 1	__	__	Female × Female	Rigid × Flexible	Steel	Metal	UL Listed	0000000	00000
For EMT × RMC
Compression × Threaded
1/2 × 1/2	1/2	NPT	Female × Female	Rigid × Rigid	Steel	Metal	__	0000000	0000
3/4 × 3/4	3/4	NPT	Female × Female	Rigid × Rigid	Steel	Metal	__	0000000	0000
1 × 1	1	NPT	Female × Female	Rigid × Rigid	Steel	Metal	UL Listed	0000000	00000