Conduit Reducers | McMaster-Carr

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47 Products

About Conduit

Join two different sizes of threaded conduit. Use with medium-wall (IMC) and thick-wall (rigid) steel conduit.

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

Conduit Connection
Conduit Trade Size	Pipe Size	Thread Type	Gender	Material	Specifications Met		Each
3/4 × 1/2	3/4 × 1/2	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	00000
1 × 1/2	1 × 1/2	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	0000
1 × 3/4	1 × 3/4	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	0000
1 1/4 × 1/2	1 1/4 × 1/2	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	0000
1 1/4 × 3/4	1 1/4 × 3/4	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	0000
1 1/4 × 1	1 1/4 × 1	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	0000
1 1/2 × 1	1 1/2 × 1	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	0000
2 × 1/2	2 × 1/2	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	00000
2 × 3/4	2 × 3/4	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	00000
2 × 1	2 × 1	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	00000
2 × 1 1/4	2 × 1 1/4	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	00000
2 × 1 1/2	2 × 1 1/2	NPSM	Male × Female	Zinc-Plated Steel	UL Listed	0000000	00000

Reducing Washers for Medium-Wall (IMC) and Thick-Wall (Rigid) Steel Conduit

Reduce the knockout size in an outlet box or enclosure so you can attach a different size of medium-wall (IMC) and thick-wall (rigid) steel conduit to it. Two reducing washers are required per knockout.

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

Conduit Trade Size	Material	Specifications Met	Pkg. Qty.		Pkg.
3/4 × 1/2	Steel	UL Listed, CSA Certified	10	00000000	00000
1 × 1/2	Steel	UL Listed, C-UL Listed, CSA Certified	10	00000000	0000
1 × 3/4	Steel	UL Listed, C-UL Listed, CSA Certified	10	00000000	0000
1 1/4 × 1/2	Steel	UL Listed, C-UL Listed, CSA Certified	10	00000000	0000
1 1/4 × 3/4	Steel	UL Listed, C-UL Listed, CSA Certified	10	00000000	0000
1 1/4 × 1	Steel	UL Listed, C-UL Listed, CSA Certified	10	00000000	0000
1 1/2 × 1	Steel	UL Listed, C-UL Listed, CSA Certified	10	00000000	0000
2 × 1/2	Steel	UL Listed, CSA Certified	10	00000000	0000
2 × 3/4	Steel	UL Listed, CSA Certified	10	00000000	0000
2 × 1	Steel	UL Listed, CSA Certified	10	00000000	0000
2 × 1 1/4	Steel	UL Listed, CSA Certified	10	00000000	00000
2 × 1 1/2	Steel	UL Listed, CSA Certified	10	00000000	00000

Raintight Reducing Washers for Medium-Wall
(IMC) and Thick-Wall (Rigid) Steel Conduit

Seal out moisture while reducing a knockout size in an outlet box or enclosure. Each includes a washer and a rubber-coated steel gasket.

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

Conduit Trade Size	Material	Includes	Specifications Met		Each
3/4 × 1/2	Steel	Rubber-Coated Steel Gasket	UL Listed, C-UL Listed, ANSI/NEMA FB 1	00000000	00000
1 × 1/2	Steel	Rubber-Coated Steel Gasket	UL Listed, C-UL Listed, ANSI/NEMA FB 1	00000000	00000
1 × 3/4	Steel	Rubber-Coated Steel Gasket	UL Listed, C-UL Listed, ANSI/NEMA FB 1	00000000	00000
1 1/4 × 1/2	Steel	Rubber-Coated Steel Gasket	UL Listed, C-UL Listed, ANSI/NEMA FB 1	00000000	00000
1 1/4 × 3/4	Steel	Rubber-Coated Steel Gasket	UL Listed, C-UL Listed, ANSI/NEMA FB 1	00000000	00000
1 1/4 × 1	Steel	Rubber-Coated Steel Gasket	UL Listed, C-UL Listed, ANSI/NEMA FB 1	00000000	00000
2 × 1/2	Steel	Rubber-Coated Steel Gasket	UL Listed, C-UL Listed, ANSI/NEMA FB 1	00000000	00000

Reducing Adapters for Rigid PVC Conduit

Connect two different sizes and genders of PVC Schedule 40 or Schedule 80 conduit. These reducing adapters are lightweight, corrosion resistant, and UV light resistant for outdoor use. They can be buried or encased in concrete. PVC cement is required (not included) to secure the connection.

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

Conduit Connection
Conduit Trade Size	Conduit Connection Type	Gender	Material	Color	Specifications Met		Each
3/4 × 1/2	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	00000
1 × 1/2	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	0000
1 × 3/4	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	0000
1 1/4 × 3/4	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	0000
1 1/4 × 1	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	0000
1 1/2 × 1	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	0000
1 1/2 × 1 1/4	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	0000
2 × 1 1/4	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	00000
2 × 1 1/2	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	00000
2 1/2 × 2	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	00000
3 × 2	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	00000
4 × 3	Push-In	Male × Female	PVC	Gray	UL Listed	0000000	00000

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

Reducers for Flexible Plastic Conduit

To connect different sizes of conduit, these reducers have tabs on the ends that snap into grooves in the conduit. They help seal out air and liquid when used with flexible plastic conduit. All meet IP68 for prolonged submersion and IP69K for high-pressure, high-temperature washdowns. They withstand vibration, are flame retardant, and resist oil, solvents, and UV light.

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

Tee Reducers

Conduit Connection
Conduit Trade Size - 1	Conduit Trade Size - 2 and - 3	Conduit Connection Type	Gender	Material	Color	Temperature Range, °F	Environmental Rating	Specifications Met		Each
1	3/4	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL Recognized Component, UL 94 V-0	0000000	000000

Wye Reducers

Conduit Connection
Conduit Trade Size - 1	Conduit Trade Size - 2 and - 3	Conduit Connection Type	Gender	Material	Color	Temperature Range, °F	Environmental Rating	Specifications Met		Each
5/16	1/4	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL Recognized Component, UL 94 V-0	0000000	000000
3/8	5/16	Snap-In	Female	Nylon	Black	-40° to 245°	IP68, IP69K	UL Recognized Component, UL 94 V-0	0000000	00000