EMT Box Connectors | McMaster-Carr

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Conduit Trade Size

Conduit Connection

Shape

Fitting Connection

Connects To

Pipe Size

Material

Conduit Type

Gender

Environment

Knockout Connection

For Conduit Flexibility

Thread Type

Color

Flexibility

Certification

For Conduit Material

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

RoHS

REACH

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Offset Length

UL File Number

115 Products

About Conduit

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

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	7150K11	00000
1/2	Female	1/2	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	1841T21	0000
1/2	Female	1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K71	0000
1/2	Female	1/2	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	1841T11	0000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K12	0000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	1841T22	0000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K72	0000
3/4	Female	3/4	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	1841T12	0000
1	Female	1	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K13	0000
1	Female	1	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	1841T23	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K97	0000
1	Female	1	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	1841T13	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K14	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	1841T24	00000
1 1/4	Female	1 1/4	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K87	0000
1 1/4	Female	1 1/4	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	1841T14	00000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K15	0000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	1841T25	00000
1 1/2	Female	1 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K88	0000
1 1/2	Female	1 1/2	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	1841T15	00000
2	Female	2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K16	00000
2	Female	2	NPSM	Male	Grommet, Locknut, O-Ring	UL Listed, C-UL Listed	1841T26	00000
2	Female	2	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K89	00000
2	Female	2	NPSM	Male	Locknut, O-Ring	UL Listed, C-UL Listed	1841T16	00000
2 1/2	Female	2 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K314	00000
2 1/2	Female	2 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K311	00000
3	Female	3	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K315	00000
3	Female	3	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K312	00000
4	Female	4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K316	00000
4	Female	4	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K313	00000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K17	0000
1/2	Female	1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K74	000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K18	0000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K75	0000
1	Female	1	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K19	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K76	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K21	0000
1 1/4	Female	1 1/4	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K91	0000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K22	0000
1 1/2	Female	1 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K92	0000
2	Female	2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K23	0000
2	Female	2	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K93	0000
2 1/2	Female	2 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K411	00000
2 1/2	Female	2 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K317	00000
3	Female	3	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K412	00000
3	Female	3	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K318	00000
4	Female	4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K413	00000
4	Female	4	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K319	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	7150K24	00000
1/2	Female	1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K31	0000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K25	0000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K32	0000
1	Female	1	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K26	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K33	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K27	0000
1 1/4	Female	1 1/4	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K51	0000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K28	00000
1 1/2	Female	1 1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K52	0000
2	Female	2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K29	00000
2	Female	2	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K53	0000
2 1/2	Female	2 1/2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K114	00000
2 1/2	Female	2 1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K111	00000
3	Female	3	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K115	00000
3	Female	3	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K112	00000
4	Female	4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K116	00000
4	Female	4	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K113	00000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K61	000
1/2	Female	1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K34	000
3/4	Female	3/4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K62	0000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K35	000
1	Female	1	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K63	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K36	0000
1 1/4	Female	1 1/4	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K64	0000
1 1/4	Female	1 1/4	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K44	0000
1 1/2	Female	1 1/2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K65	0000
1 1/2	Female	1 1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K45	0000
2	Female	2	NPSM	Male	Grommet, Locknut	UL Listed, C-UL Listed	7150K66	0000
2	Female	2	NPSM	Male	Locknut	UL Listed, C-UL Listed	7150K46	00000
2 1/2	Female	2 1/2	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K211	00000
2 1/2	Female	2 1/2	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K117	00000
3	Female	3	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K212	00000
3	Female	3	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K118	00000
4	Female	4	NPSM	Male	Grommet, Locknut	UL Listed, CSA Certified	7150K213	00000
4	Female	4	NPSM	Male	Locknut	UL Listed, CSA Certified	7150K119	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	8081K31	00000
3/4	Female	3/4	NPSM	Male	Locknut	UL Listed, CSA Certified	8081K32	0000
1	Female	1	NPSM	Male	Locknut	UL Listed, CSA Certified	8081K33	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	8081K41	00000
3/4	Female	3/4	NPSM	Male	3/4"	Locknut	UL Listed, CSA Certified	8081K42	0000
1	Female	1	NPSM	Male	1"	Locknut	UL Listed	8081K43	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	9150T22	00000
3/4	Screw-Clamp	Female	3/4	NPSM	Male	Steel	UL Listed	Black, Blue, Red, White	9150T21	0000
1	Screw-Clamp	Female	1	NPSM	Male	Steel	UL Listed	Blue, Red	9150T23	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	1843T11	000000
3/4	Female	3/4	NPT	Male	316 Stainless Steel	1843T12	00000
1	Female	1	NPT	Male	316 Stainless Steel	1843T13	00000
1 1/4	Female	1 1/4	NPT	Male	316 Stainless Steel	1843T31	000000
1 1/2	Female	1 1/2	NPT	Male	316 Stainless Steel	1843T32	000000
2	Female	2	NPT	Male	316 Stainless Steel	1843T33	000000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
1/2	Female	1/2	NPT	Male	316 Stainless Steel	1843T34	00000
3/4	Female	3/4	NPT	Male	316 Stainless Steel	1843T35	00000
1	Female	1	NPT	Male	316 Stainless Steel	1843T36	00000
2	Female	2	NPT	Male	316 Stainless Steel	1843T39	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	7984K11	00000
3/4 × 3/4	__	__	Female × Male	Rigid × Flexible	Zinc	Metal	UL Listed	7984K12	0000
1 × 1	__	__	Female × Male	Rigid × Flexible	Zinc	Metal	UL Listed	7984K13	0000
Screw-Clamp × Screw-Clamp
1/2 × 1/2	__	__	Female × Female	Rigid × Flexible	Zinc	Metal	UL Listed	7984K2	0000
3/4 × 3/4	__	__	Female × Female	Rigid × Flexible	Zinc	Metal	UL Listed	7984K3	0000
1 × 1	__	__	Female × Female	Rigid × Flexible	Zinc	Metal	UL Listed	7984K27	0000
For EMT × LFMC
Compression × Twist-In
1/2 × 1/2	__	__	Female × Female	Rigid × Flexible	Steel	Metal	UL Listed	7984K23	0000
3/4 × 3/4	__	__	Female × Female	Rigid × Flexible	Steel	Metal	UL Listed	7984K24	0000
1 × 1	__	__	Female × Female	Rigid × Flexible	Steel	Metal	UL Listed	7984K25	00000
For EMT × RMC
Compression × Threaded
1/2 × 1/2	1/2	NPT	Female × Female	Rigid × Rigid	Steel	Metal	__	7984K21	0000
3/4 × 3/4	3/4	NPT	Female × Female	Rigid × Rigid	Steel	Metal	__	7984K22	0000
1 × 1	1	NPT	Female × Female	Rigid × Rigid	Steel	Metal	UL Listed	7984K14	00000