Metal Washers | McMaster-Carr

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

REACH Compliant

	Hardness Hardness

	Shape Shape


Ring	Made to Order

Keyed	D-Profile

	For Hole Diameter For Hole Diameter

	Individual/Set Individual/Set

Individual

Set

	Working Load Working Load

10,000 lbs. or greater

	Magnetic Properties Magnetic Properties

May Be Mildly Magnetic

Magnetic

Nonmagnetic

	Height Height

	Disc Spring Type Disc Spring Type


Wave	Belleville

Curved	Notched

Finger

	Compressed Height @ Working Load Compressed Height @ Working Load

	Tooth Location Tooth Location

	External
	Internal
	Internal/External

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10,619 Products

Washers

General Purpose Washers

Metric General Purpose Washers

Use these metric washers to evenly distribute the load under bolt or screw heads and nuts when fastening. They can also act as spacers.

Oversized Washers

Compared to our general purpose washers, these have exaggerated diameters and/or thicknesses for covering oversized holes or for use as spacers and levelers.

Metric Oversized Washers

Compared to our general purpose washers, these have exaggerated diameters and/or thicknesses. Use them to cover oversized holes, hold heavy fastening loads, or as spacers and levelers.

SAE Washers

SAE washers generally have a smaller ID and OD than USS washers.

Mil. Spec. Washers

Choose these washers for their adherence to strict military standards for material and construction.

USS Washers

USS washers generally have a larger ID and OD than SAE washers.

ASME Washers for Soft Material

Also known as Type B washers, these distribute your fastener's load over a larger surface area than other washers to minimize damage to soft materials.

Washers with Material Certification

These washers come with a traceable lot number and a physical and chemical test report.

Washers for Structural Applications

Designed for use with A325 structural screws, studs, and nuts, these washers are often used for construction and exterior building applications.

Metric Washers for Structural Applications

These thick washers are designed to support structural screws, studs, and nuts.

Tension-Indicating Washers for Structural Applications

When you’ve applied the correct tension, these washers release an orange dye as a visual indicator.

Washers for Blind Rivets

Also known as backup washers, these are for use with blind rivets for extra support when fastening into soft material.

Finishing Countersunk Washers

Metric Finishing Countersunk Washers

Countersunk Washers

Flat and oval head screws sit flush within these washers for a neat, finished appearance.

Metric Countersunk Washers

Flat and oval head screws sit flush within these metric washers for a neat, finished appearance.

Plastic Countersunk Washers

Plastic washers are good electrical insulators.

Square Washers

Square washers fit into slots and channels and have flat sides to keep them from rotating.

Square Washers for Blind Rivets

Also known as backup washers, these are for use with blind rivets for extra support when fastening into soft material.

Cup Washers for Oversized Holes

Cover oversized holes and the ends of tubes and pipe with these cup-shaped washers.

Double-Clipped Washers

Clipped on both sides to fit where standard washers can't, these won't rotate when you position the flat edges against a flat surface.

Clipped Washers

Clipped to fit where standard washers can't, these won't rotate when you position the flat edge against a flat surface.

Oversized Clipped Washers

With greater diameters and/or thicknesses than general purpose washers, these washers cover oversized holes or act as spacers and levelers. Clipped to fit where standard washers can’t, they won’t rotate when you position the flat edge against a flat surface.

Angled-Edge Washers for
Toggle Clamp Holding Screws

Use on clamps with open arms to keep the holding screw in place.

Angled-Edge Washers for Tie-Down Straps

Use the angled edges to hold and align tie-down straps.

Steel Washers for Rigid Insulation

Steel washers provide a stronger bearing surface than plastic washers

Curved Washers

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

Washers for Plaster

Repair sagging, cracked plaster with these washers. The holes allow plaster to flow through to form a secure bond between the washer and the wall.

Washers for Electrical Terminals

To keep electrical connections intact, these washers retain wires so they won't slip out from under your screw head.

Sleeve Washers for Soft Material

Reinforce holes in soft material to keep them from collapsing around screws.

Washers for Cross-Bracing

Connect cross-bracing rods or cables to structural beams.

Washers for Foam Insulation

These washers have prongs that pierce foam insulation so they stay in place.

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.

Notched Washers for Wood

Also called No. 10 Western Timber and Victor washers, these have large ODs to prevent screws from sinking into wood. The notches allow you to temporarily secure them with nails to keep them from rotating during installation.

Sealing Washers

Metal-Bonded Sealing Washers

Create a stronger seal than metal or rubber alone. These one-piece washers are metal for strength with a bonded rubber seal that creates a tight grip.

Pressure-Rated Metal-Bonded Sealing Washers

These washers are rated to withstand pressure up to 100 psi.

High-Pressure-Rated Metal-Bonded Sealing Washers

Able to withstand pressure greater than 3,000 psi, these one-piece bonded washers create the tightest seals.

Metric High-Pressure-Rated
Metal-Bonded Sealing Washers

Able to withstand pressure greater than 7,000 psi, these one-piece bonded washers create the tightest seals.

Pressure-Rated Metal-Bonded Sealing
Washers for Nuts and Washers

Also known as thread-sealing washers, use these under nuts and other washers.

Metal Sealing Washers

Also known as crush washers, these compress when tightened to form a tighter, more durable seal than rubber washers. They are commonly used to seal fluids such as oil and fuel.

Split Lock Washers

As a screw is tightened, these washers flatten to add tension to the joint and prevent loosening from small amounts of vibration.

Metric Split Lock Washers

As you tighten a bolt, these metric washers flatten to add tension to the threaded joint and prevent loosening from small amounts of vibration.

Mil. Spec. Split Lock Washers

Choose these washers for their adherence to strict military standards for material and construction.

Split Lock Washers for Socket Head Screws

Metric Split Lock Washers for Socket Head Screws

Oversized Split Lock Washers

Compared to standard split lock washers, these are thicker and have larger outside diameters.

Spring Lock Washers

Belleville Spring Lock Washers for Socket Head Screws

These washers have smaller outside diameters than standard spring lock washers to fit neatly under socket head cap screws.

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.

Spring Lock Washers for Slotted Bearing Nuts

Designed for use with bearing nuts, these lock washers have a conical shape that presses like a spring against bearings, bushings, gears, and pulleys to hold them in place on your threaded shaft or spindle.

Belleville Spring Lock Washers

Also known as conical washers, these have a slightly cupped shape that gives them spring-like flexibility to grip tighter than split and tooth lock washers.

Tooth Lock Washers

Internal-Tooth Lock Washers for Soft Material

Slightly domed with an oversized outside diameter, these washers distribute your fastener's load over a larger surface area than other internal-tooth lock washers to limit damage to soft material.

External-Tooth Lock Washers

Teeth on the outside edge of the washer bite into the screw head and joint for a tight grip.

Mil. Spec. External-Tooth Lock Washers

Choose these washers for their adherence to strict military standards for material and construction.

Metric Internal-Tooth Lock Washers

Internal teeth dig into the screw head while the smooth outside edge won't snag objects. Use with metric fasteners that have small heads, such as fillister and cheese head screws.

Countersunk Tight-Grip External-Tooth Lock Washers

To keep 90° countersunk screws from loosening in vibration applications, the teeth on these washers bite further into the screw head and joint than standard external-tooth lock washers for a more secure hold.

Internal-/External-Tooth Lock Washers

The combination of internal and external teeth boosts gripping power to maintain a tight hold and provide more vibration resistance than other tooth lock washers. Use with fasteners that have heads large enough to make contact with the external teeth, such as pan, button, and binding head screws.

Tight-Grip External-Tooth Lock Washers

The teeth on these washers bite further into the screw head and joint than standard external-tooth washers to provide a stronger hold.

Mil. Spec. Internal-Tooth Lock Washers

Choose these washers for their adherence to strict military standards for material and construction.

Countersunk External-Tooth Lock Washers

The teeth on these washers firmly grip heads of 82° flat head countersunk screws.

Internal-Tooth Lock Washers

Internal teeth dig into the screw head while the smooth outside edge won't snag objects. Use with fasteners that have small heads, such as fillister and cheese head screws.

Metric External-Tooth Lock Washers

Teeth on the outside edge of these metric washers bite into the screw head and joint for a tight grip.

Wedge Lock Washers

Also known as NORD-LOCK® washers, these two-piece washers provide more locking power than split, tooth, and spring lock washers. Wedges on the inside lock the two pieces together, and serrations on the exterior grip surfaces to resist loosening from high vibration and shifting.

Square-Neck Bolt Lock Washers

Designed for use with square-neck bolts such as carriage bolts, these washers have teeth that dig into wood and other soft material to prevent rotation.

Tab Lock Washers

Bend one tab against the side of the mounting surface and the other tab against the flats on a bolt or nut to prevent both the fastener and washer from turning and loosening in high-vibration applications, such as a motor mount.

Metric Tab Lock Washers

Bend the tab of these metric lock washers against the flats of a hex nut or bolt head to prevent the fastener and washer from turning and loosening due to vibration, wear, or changes in temperature.

Leveling and Wave Washers

Leveling Washers

Triple-Wave Washers

With three points of surface contact, these washers provide more stability than single-wave washers.

Metric Single-Wave Washers

These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces.

Metric Leveling Washers

Single-Wave Washers

These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces.

Metric Leveling Washers for I-Beams

Leveling Washers for I-Beams

Round Shims

Ring Shims

Precisely align, level, and adjust spacing on fasteners and shafts with these shims.

Ring Shim Sets

Be prepared with ring shims in a variety of thicknesses. These shims fit around fasteners and shafts to precisely align, level, and adjust spacing.

Wide-Rim Ring Shims

Also known as machinery bushings, these shims have an oversized OD to create a larger bearing surface for reduced wear between moving parts.

Peel-Away Layered Ring Shims

These shims are made of layers of metal bonded with adhesive. Remove layers with a utility knife until you get the thickness you need.

Tight-Fit Ring Shims

For a snug fit around a shaft, the ID of these shims is held to a tighter tolerance than other round shims.

Shims for Shortening Screw Shoulders

Slide these shims under the screw head to shorten the shoulder length.

Shims for D-Profile Shafts

These shims are shaped to fit over D-profile shafts. Use them to precisely align, level, and adjust spacing.

Shim Sets for D-Profile Shafts

Be prepared with shims in a variety of thicknesses. These shims are shaped to fit over D-profile shafts. Use them to precisely align, level, and adjust spacing.

Shims for Lengthening Screw Shoulders

Spin these shims onto screw threads to extend the shoulder length.

Shims for Keyed Shafts

Precisely shaped to fit snugly on keyed shafts, these shims align, level, and space components. Because of their tight fit, they also help components rotate in unison with the shaft.

Shim Sets for Keyed Shafts

Be prepared with shims in a variety of thicknesses. Also known as arbor spacers, these shims are notched to fit over keyed shafts.

Shims for Ball Bearings

Adjust spacing between bearings and other components on shafts. These shims are sized to fit the outer rim of a bearing.

Shims for Button Dies

Place these shims under sharpened dies to restore their original height and extend their life.

Made-to-Order Shims

Made-to-Order Peel-Away Layered Shims

Send us a drawing, and we'll cut your custom shim. Shims are made of layers of metal bonded with adhesive; remove layers with a utility knife until you get the thickness you need.

Made-to-Order Shims

Send us a drawing, and we'll cut your custom shim.

Clip-On External Retaining Rings

Slide these rings into a groove near the end of the shaft and the tab locks them in place.

Unthreaded Spacers for Keyed Shafts

Also known as arbor spacers, these are notched to space components on a keyed shaft.

Ring Shim Assortments

Shim Assortments for Shortening Shoulder Screws

Slide onto a shoulder screw to shorten the length of the shoulder.

Ring Shim Assortments

Use round shims to precisely align, level, and adjust spacing on shafts and machinery.

Washers

General Purpose Washers

Metric General Purpose Washers

Oversized Washers

Metric Oversized Washers

SAE Washers

Mil. Spec. Washers

USS Washers

ASME Washers for Soft Material

Washers with Material Certification

Washers for Structural Applications

Metric Washers for Structural Applications

Tension-Indicating Washers for Structural Applications

Washers for Blind Rivets

Finishing Countersunk Washers

Metric Finishing Countersunk Washers

Countersunk Washers

Metric Countersunk Washers

Plastic Countersunk Washers

Square Washers

Square Washers for Blind Rivets

Cup Washers for Oversized Holes

Double-Clipped Washers

Clipped Washers

Oversized Clipped Washers

Angled-Edge Washers forToggle Clamp Holding Screws

Angled-Edge Washers for Tie-Down Straps

Steel Washers for Rigid Insulation

Curved Washers

Washers for Plaster

Washers for Electrical Terminals

Sleeve Washers for Soft Material

Washers for Cross-Bracing

Washers for Foam Insulation

Flanged Washers for Cross-Bracing

Easy-Install Slotted Washers

Notched Washers for Wood

Sealing Washers

Metal-Bonded Sealing Washers

Pressure-Rated Metal-Bonded Sealing Washers

High-Pressure-Rated Metal-Bonded Sealing Washers

Metric High-Pressure-RatedMetal-Bonded Sealing Washers

Pressure-Rated Metal-Bonded SealingWashers for Nuts and Washers