Iron Couplings | McMaster-Carr

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	Material Material	Show

	Material Material	Hide

Stainless Steel

	System of Measurement System of Measurement

	For Shaft Diameter For Shaft Diameter

1/4" to 5/8"

1/4" to 3/4"

1/4" to 7/8"

1/4" to 1"

7/16" to 1 1/8"

7/16" to 1 3/16"

7/16" to 1 3/8"

5/8" to 1 5/8"

5/8" to 1 7/8"

3/4" to 2 1/8"

3/4" to 2 5/8"

	Construction Construction

	Type Type


Connector	Adapter

Pipe	Reducer

Reducing Adapter	Bushing

Union	Repair Clamp

Clamp	Plug

Cap

	Length Length

	Shaft Mount Type Shaft Mount Type


Clamp On	Set Screw

	For Motion Type For Motion Type

Forward/Reverse

	For Shaft Type For Shaft Type

	Round
	Keyed
	Spline

	Pipe Size Pipe Size

2
2 1/2
3
3 1/2
4
5
6

	For Shaft Misalignment Type For Shaft Misalignment Type


Angular	Parallel

Axial	None

	Set Screw Material Set Screw Material

	Shape Shape


Straight	90° Elbow

Cap/Plug	Tee

Wye	45° Elbow

Cross

	Thread Type Thread Type

	Shaft Coupling Type Shaft Coupling Type

	Connection Style Connection Style

	For Use With For Use With

Calcium Chloride

Deionized Water

Hydrochloric Acid

Phosphoric Acid

Sodium Hydroxide

	Number of Set Screws Included Number of Set Screws Included

	For Pipe Material For Pipe Material

	Gender Gender

	Class Class

	Finish Finish

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1,106 Products

Couplings

Pipe and Pipe Fittings

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Connect pipe to pipe in low- to high-pressure applications. Pipe and fittings are measured by pipe size, which is an industry designation, not an actual measured size like hose, tubing, and duct. Pipe is typically rigid.

Hose and Hose Fittings

Flexible Shaft Couplings

Flexible Shaft Couplings

Connect two shafts with up to 15° of misalignment. Flexible shaft couplings perform better than U-joints and flexible shafts in high-speed, low-torque applications. They're also better than U-joints for applications requiring precise movement and directional changes.

Two-Piece Shaft Coupling Bridges

Two-Piece Shaft Coupling Bridges

When your shafts are not close enough to use standard couplings, these have the length to bridge the gap.

High-Torque Easy-Install
Single U-Joints

These U-joints handle at least 11,000 in.-lbs. of torque.

Conduit and Fittings

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Use with stationary and moving runs of wire and cable. Conduit provides more protection than raceway and wire duct.

Galvanized Iron and Steel
Slip-On Framing and Fittings

Galvanized Iron and Steel Slip-On Framing and Fittings

To provide corrosion resistance in wet environments, this framing is galvanized.

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The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)