Half-Moon Washers | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thickness Thickness

	Width Width

	Length Length

	Material Material

	Slot Width Slot Width

	For Screw Size For Screw Size

	Shape Shape


Slotted	Tapered

	OD OD

	For Shaft Diameter For Shaft Diameter

	Washer Type Washer Type


For Cross- Bracing	Slotted

Curved	Spring Lock

Split Lock

	Trade Size Trade Size

AAA

	ID ID

	For Maximum Screw Size For Maximum Screw Size

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Slot Depth Slot Depth

	Finish Finish

Chromate Conversion
Coated

	Individual/Set Individual/Set

Individual

Set

	Color Color

	Gray		Red
	Blue		White
	Brown		Green
	Pink		Black
	Clear		Coral
	Yellow

	Magnetic Properties Magnetic Properties

May Be Mildly Magnetic

Nonmagnetic

Magnetic

	Minimum Hardness Minimum Hardness

684 Products

Washers

Washers for Cross-Bracing

Connect cross-bracing rods or cables to structural beams.

Flanged Washers for Cross-Bracing

These washers have a flange to spread force across structural beams better than standard washers for cross-bracing rods and cables.

Easy-Install Slotted Washers

A slot in the side allows you to install and remove these washers without completely disassembling your joint.

Curved Washers

Also known as saddle washers, these curved washers fit round surfaces such as tubes and pipe.

Metric Spring Lock Washers

The arched shape of these washers presses up against a bolt and down against a nut to prevent loosening from wear, vibration, or temperature changes.

Metric Split Lock Washers

Slotted Shims

The slot lets you insert, remove, and adjust the shims without disassembling your machinery.

Color-Coded Slotted Shims

These shims are color-coded by thickness for easy identification. The slot lets you insert, remove, and adjust the shims without disassembling your machinery.

Color-Coded Slotted Shim Sets

Keep slotted shims in a variety of thicknesses on hand with these sets, which are color-coded by thickness for easy identification. The slot lets you insert, remove, and adjust the shims without disassembling your machinery.

Slotted Shim Sets

Be prepared with slotted shims in a variety of thicknesses. The slot lets you insert, remove, and adjust the shims without disassembling your machinery.

Large-Adjustment Slotted Shims

Use these thick shims to align cabinets, doors, and windows, or for other rough leveling.

Breakaway Slotted Shims

These shims are scored so you can easily shorten them to the length you need. Designed to fit around screws, they are commonly used in window, door, and cabinet installations.

Shims for Hinges

Slide these shims behind your door’s hinge to align it in the jamb.

Horseshoe Shims

Align cabinets, doors, and windows with these shims. The horseshoe design fits around screws.

Color-Coded Horseshoe Shims

These shims are color-coded by thickness for easy identification. The horseshoe design fits around screws.

Interlocking Color-Coded Horseshoe Shims

Clips on these shims hold them together when stacked, and they are color coded by thickness for easy identification. Designed to fit around screws, they are commonly used in window, door, and cabinet installations.

Multi-Slotted Shims

Use a single shim on feet or positioning arms that are secured with multiple fasteners. The slots let you insert, remove, and adjust the shims without disassembling your machinery. Also known as finger shims.

Slotted Tapered Shims

The slot lets you install these rigid shims around screws.

Curved Disc Springs

Corrosion-Resistant Curved Disc Springs

Made of stainless steel, these springs are more corrosion resistant than steel springs.

Curved Disc Springs

Use these high-carbon steel springs in noncorrosive environments.