McMaster-Carr

Choose a Category

Clear All

	System of Measurement System of Measurement

Inch

Metric

	For Screw Size For Screw Size	Show

3/4"

	For Screw Size For Screw Size	Hide

	Material Material

	Finish Finish

Black Oxide

Black Ultra-Corrosion-
Resistant Coated

Cadmium Plated

Galvanized

Hot-Dipped Galvanized

Passivated

Yellow-Chromate Plated

Zinc Plated

Zinc Yellow-Chromate Plated

Zinc-Aluminum Coated

Zinc-Flake Coated

	Washer Type Washer Type


Flat	Split Lock

Metal Bonded	Tooth Lock

Square	Sleeve

Spring Lock	Wave

Clipped	Wedge Lock

Spherical	Slotted

Leveling for I- Beams	Tension Indicating

Notched	Tab Lock

Raised Grid

	OD OD

	ID ID

	Thickness Thickness

0.013" to 0.019"

0.014" to 0.016"

0.015"

0.02"

0.021" to 0.041"

0.028" to 0.034"

0.028" to 0.035"

0.028" to 0.036"

0.047" to 0.055"

0.047" to 0.077"

0.048" to 0.054"

0.052" to 0.072"

0.053" to 0.073"

0.054" to 0.070"

0.055"

0.055" to 0.070"

0.057" to 0.067"

0.057" to 0.075"

0.058" to 0.064"

0.059" to 0.069"

0.060" to 0.090"

0.063"

0.068" to 0.088"

0.071"

0.073" to 0.083"

0.078" to 0.108"

0.080" to 0.100"

0.081" to 0.101"

0.082" to 0.098"

0.083" to 0.097"

0.083" to 0.103"

0.084" to 0.102"

0.084" to 0.104"

0.084" to 0.114"

0.085" to 0.101"

0.085" to 0.102"

0.086" to 0.116"

0.090" to 0.112"

0.090" to 0.119"

0.092" to 0.112"

0.093" to 0.107"

0.094" to 0.156"

0.099" to 0.116"

0.099" to 0.119"

0.099" to 0.120"

0.102" to 0.116"

0.104" to 0.114"

0.104" to 0.124"

0.105" to 0.115"

0.108" to 0.160"

0.110" to 0.140"

0.112" to 0.128"

0.120" to 0.130"

0.120" to 0.140"

0.120" to 0.141"

0.122" to 0.146"

0.122" to 0.177"

0.123" to 0.128"

0.126" to 0.133"

0.127" to 0.141"

0.136" to 0.161"

0.136" to 0.192"

0.146" to 0.174"

0.170" to 0.200"

0.185" to 0.205"

0.188"

0.198" to 0.223"

0.206" to 0.229"

0.218"

0.220" to 0.280"

0.225" to 0.265"

0.226"

0.230" to 0.255"

0.230" to 0.270"

0.235" to 0.255"

0.235" to 0.265"

0.236" to 0.264"

0.240" to 0.260"

0.245" to 0.255"

0.281" to 0.343"

0.298" to 0.308"

0.330" to 0.350"

0.360" to 0.390"

0.365" to 0.397"

0.428" to 0.448"

0.438"

0.469" to 0.531"

	Fastener Strength Grade/Class Fastener Strength Grade/Class

Grade 8

Grade 9

	Specifications Met Specifications Met

ASME

ASTM

Mil. Spec.

NAS

SAE

SAE J314

USS

	Hardness Hardness

	Color Color

	Off-White		Black
	White		Gray
	Clear		Red
	Tan		Light Green
	Blue		Green
	Brown

	Width Width

	Length Length

	ASME Designation ASME Designation

Narrow

Wide

Regular

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	Clipped Width Clipped Width

1.125"

1.375"

	Overall Height Overall Height

	Shape Shape

	Round

	Tooth Location Tooth Location


External	Internal

	Sleeve OD Sleeve OD

0.810"

	Seal Material Seal Material

Rubber

Plastic

View catalog pages (37)

Forward

How can we improve?

288 Products

About Washers

General Purpose Washers

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.

Mil. Spec. Washers

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

SAE Washers

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

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.

Tension-Indicating Washers
for Structural Applications

These washers release an orange dye when tightened.

Plastic Washers

Mil. Spec. Plastic Washers

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

Chemical-Resistant Plastic Washers

These washers surpass most other plastic washers when it comes to withstanding chemicals, oil, and grease.

Mil. Spec. Chemical-Resistant
Plastic Washers

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

Electrical-Insulating Plastic Washers

Water- and Steam-Resistant
Plastic Washers

Low moisture absorption and good heat resistance make these washers suitable for wet and harsh environments.

High-Temperature Plastic Washers

These washers can withstand temperatures up to 500° F without degrading.

Extreme-Temperature
Ceramic Washers

These washers hold up in blistering temperatures up to 3000° F.

Square Washers

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

Extra-Tall Electrical-Insulating
Rolled-Collar Sleeve Washers

The extra-tall sleeve extends into holes to provide more protection than other rolled-collar washers.

Clipped Washers

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

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.

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.

Lock Washers

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.

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

Oversized Split Lock Washers

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

External-Tooth Lock Washers

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

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.

Mil. Spec. Internal-Tooth
Lock Washers

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

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.

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.

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.

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.

Sealing Washers

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.

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

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

Weather-Resistant
Rubber Sealing Washers

Sunlight, ozone, and water won’t affect these washers.

Abrasion-Resistant Rubber
and Plastic Sealing Washers

Made of durable material, these washers resist wear from rubbing and scraping surfaces.

Oil-Resistant Rubber
Sealing Washers

These washers surpass other rubber washers when it comes to withstanding oil, grease, and fuel.

Chemical-Resistant
Rubber Sealing Washers

These washers withstand harsh chemicals such as acetic acid and isopropyl alcohol.

Leveling and Wave Washers

Triple-Wave Washers

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

Leveling Washers

Leveling Washers for I-Beams

Cushioning Washers

Abrasion-Resistant
Cushioning Washers

These SBR rubber washers are reinforced with cloth fibers.

Abrasion-Resistant Leather Washers

These leather washers are nonmarring.

Moisture-Resistant
Cushioning Washers

These polyurethane washers withstand wet conditions as well as sunlight, ozone, and some chemicals.

Cushioning Washers

These wool felt washers can be soaked with oil to lubricate joints.

Chemical-Resistant
Cushioning Washers

Made of Buna-N rubber, these washers offer excellent chemical, weather, and oil resistance. The raised grid pattern prevents sideways shifting.

Unthreaded Spacers

Aluminum Unthreaded Spacers

Made of aluminum, these spacers are lightweight and mildly corrosion resistant.

18-8 Stainless Steel
Unthreaded Spacers

18-8 stainless steel spacers have good corrosion resistance.

Zinc-Plated Steel
Unthreaded Spacers

The zinc plating provides some corrosion resistance.

Zinc-Plated Brass
Unthreaded Spacers

Brass makes these spacers electrically conductive and the zinc-plated finish adds corrosion resistance.

Nylon Unthreaded Spacers

These spacers have excellent wear and abrasion resistance. Exposure to moisture may cause them to expand.

Vibration-Damping
Unthreaded Spacers

Reduce vibration, shock, and noise with these spacers that compress between components.

Unthreaded Spacers for Angles

The 45° end fits against an angled surface to create a flat surface for connection.

Terms and Conditions and Privacy Policy

About Washers

Washers

General Purpose Washers

Oversized Washers

Mil. Spec. Washers

SAE Washers

USS Washers

ASME Washers for Soft Material

Washers with Material Certification

Washers for Structural Applications

Tension-Indicating Washersfor Structural Applications

Plastic Washers

Mil. Spec. Plastic Washers

Chemical-Resistant Plastic Washers

Mil. Spec. Chemical-ResistantPlastic Washers

Electrical-Insulating Plastic Washers

Water- and Steam-ResistantPlastic Washers

High-Temperature Plastic Washers

Extreme-TemperatureCeramic Washers

Square Washers

Extra-Tall Electrical-InsulatingRolled-Collar Sleeve Washers

Clipped Washers

Double-Clipped Washers

Easy-Install Slotted Washers

Notched Washers for Wood

Lock Washers

Split Lock Washers

Mil. Spec. Split Lock Washers

Split Lock Washers forSocket Head Screws

Oversized Split Lock Washers

External-Tooth Lock Washers

Internal-Tooth Lock Washers

Mil. Spec. Internal-ToothLock Washers

Belleville Spring Lock Washersfor Socket Head Screws

Belleville Spring Lock Washers

Wedge Lock Washers

Tab Lock Washers

Sealing Washers

High-Pressure-RatedMetal-Bonded Sealing Washers

Pressure-Rated Metal-BondedSealing Washers for Nuts and Washers

Metal-Bonded Sealing Washers

Weather-ResistantRubber Sealing Washers

Abrasion-Resistant Rubberand Plastic Sealing Washers

Oil-Resistant RubberSealing Washers

Chemical-ResistantRubber Sealing Washers

Leveling and Wave Washers

Triple-Wave Washers

Leveling Washers

Leveling Washers for I-Beams

Cushioning Washers

Abrasion-ResistantCushioning Washers

Abrasion-Resistant Leather Washers

Moisture-ResistantCushioning Washers

Cushioning Washers

Chemical-ResistantCushioning Washers

Unthreaded Spacers

Aluminum Unthreaded Spacers

18-8 Stainless SteelUnthreaded Spacers

Zinc-Plated SteelUnthreaded Spacers

Zinc-Plated BrassUnthreaded Spacers

Nylon Unthreaded Spacers

Vibration-DampingUnthreaded Spacers

Unthreaded Spacers for Angles

Tension-Indicating Washers
for Structural Applications

Mil. Spec. Chemical-Resistant
Plastic Washers

Water- and Steam-Resistant
Plastic Washers

Extreme-Temperature
Ceramic Washers

Extra-Tall Electrical-Insulating
Rolled-Collar Sleeve Washers

Split Lock Washers for
Socket Head Screws

Mil. Spec. Internal-Tooth
Lock Washers

Belleville Spring Lock Washers
for Socket Head Screws

High-Pressure-Rated
Metal-Bonded Sealing Washers

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

Weather-Resistant
Rubber Sealing Washers

Abrasion-Resistant Rubber
and Plastic Sealing Washers

Oil-Resistant Rubber
Sealing Washers

Chemical-Resistant
Rubber Sealing Washers

Abrasion-Resistant
Cushioning Washers

Moisture-Resistant
Cushioning Washers

Chemical-Resistant
Cushioning Washers

18-8 Stainless Steel
Unthreaded Spacers

Zinc-Plated Steel
Unthreaded Spacers

Zinc-Plated Brass
Unthreaded Spacers

Vibration-Damping
Unthreaded Spacers