McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	For Shaft Diameter For Shaft Diameter

1/8" to 3/4"

1/2" to 1"

5/8" to 1 9/16"

3/4" to 2"

1" to 2 5/8"

1 1/4" to 3"

	Construction Construction


Two Piece	One Piece

Hinged

	Material Material

	Finish Finish

	For Shaft Type For Shaft Type


Round	Keyed

Threaded	Square

Round with Support Rail	Acme Lead Screw

Hex	D-Profile

	Clamping Screw Material Clamping Screw Material

Steel

Stainless Steel

	OD OD

	Width Width

15/32"-11/16"

3/4"-1 1/16"

7/8"-1 1/4"

1"-1 7/16"

1 1/8"-1 1/2"

1 3/16"-1 9/16"

1 3/8"-1 7/8"

1 1/2"-2"

1 5/8"-2 1/4"

1 3/4"-2 1/2"

	Number of Clamping Screws Included Number of Clamping Screws Included

	Shaft Mount Type Shaft Mount Type


Clamp On	Set Screw

	Flat-to-Flat Height Flat-to-Flat Height

	Keyway Depth Keyway Depth

	For Shaft Thread Size For Shaft Thread Size

	Thread Size Thread Size

	Thread Type Thread Type

Acme

Metric Acme

	Keyway Width Keyway Width

	Number of Mounting Holes Number of Mounting Holes

	For Shaft Width For Shaft Width

	For Screw Size For Screw Size

	Lever Material Lever Material

Zinc

Aluminum

	Mounting Hole Thread Size Mounting Hole Thread Size

4-40
6-32
8-32
10-24
10-32
1/4"-20
1/4"-28
5/16"-18

5/16"-24

3/8"-16

	Thread Direction Thread Direction

2,195 Products

Shaft Collars

Clamping Two-Piece Shaft Collars

Set Screw Two-Piece Shaft Collars

Tighten the set screw to bite into an unhardened shaft for a secure hold.

Shaft Collars

To install, slide these one-piece collars onto the end of your shaft.

Hinged Shaft Collars

Offering the benefits of a two-piece collar in a one-piece design, these collars swing open for positioning then close anywhere on your shaft.

Mountable Shaft Collars

Mounting holes or weldable materials allow you to fasten gears, pulleys, and sprockets to these collars.

Threaded Shaft Collars

Square Shaft Collars

Install these two-piece collars square shafts.

Support-Rail Shaft Collars

Designed to fit onto shafts that have a support rail running underneath them, these collars can be used as end-stops for linear motion components.

Hex Shaft Collars

D-Profile Shaft Collars

Other Split Collars

Unthreaded Inserts

These inserts reinforce joints as fasteners are tightened.

Unthreaded Spacers

Also known as clearance spacers.

Lead Screw Collars

Install these threaded collars on a lead screw to separate and position components, or use them as an end stop to limit travel.

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