Nylatron Flat Washers | McMaster-Carr

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

REACH Compliant

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Fastener Strength Grade/Class Fastener Strength Grade/Class

	Color Color

	Black
	Off-White
	White
	Gray
	Light Green
	Clear
	Red
	Beige
	Green
	Blue
	Brown
	Orange
	Maroon
	Gold
	Brown/Black
	Purple
	Amber
	Coral
	Yellow
	Pink

	Shape Shape


Ring	D-Profile

Round	Keyed

Made to Order

	For Shaft Diameter For Shaft Diameter

	Container Depth Container Depth

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	Number of Pieces Number of Pieces

8
13
18
19
30
120
150
240
270
300
350
386
450
550
555
570
590
620
755
757
825
850
1,050
1,280
1,350
1,440
1,500
1,520
1,550
1,680
2,200
3,342
7,060

	Individual/Set Individual/Set

Individual

Set

	Magnetic Properties Magnetic Properties

May Be Mildly Magnetic

10,873 Products

Washers

General Purpose Washers

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

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.

SAE Washers

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

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.

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

Also known as Type B washers, ASME washers are available in narrower and wider diameters than SAE and USS washers.

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 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.

Washer Blanks

Punch a hole to create a custom washer.

Plastic Washers

These plastic washers are good electrical insulators.

Metric Plastic Washers

These plastic washers are good electrical insulators.

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.

Metric Chemical-Resistant Plastic Washers

These metric 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

These washers are excellent electrical insulators.

Metric Electrical-Insulating Plastic Washers

These washers are excellent electrical insulators.

Water- and Steam-Resistant Plastic Washers

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

Metric Water- and Steam-Resistant Plastic Washers

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

High-Temperature Plastic Washers

These washers can withstand temperatures up to 450° or 500° F without degrading.

Metric High-Temperature Plastic Washers

These metric washers can withstand temperatures up to 450° or 500° F without degrading.

Metric Extreme-Temperature Ceramic Washers

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

Extreme-Temperature Ceramic Washers

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

High-Temperature Mica Washers

Mica washers withstand temperatures up to 1050° F.

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.

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.

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.

Self-Retaining Washers

Specially shaped tabs grip your screw shank tightly.

Adhesive-Back Washers

Peel the backing off these washers and stick them onto a surface for easy mounting and assembly.

Easy-Install Slotted Washers

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

Rectangular Washers

Narrower than clipped and square washers, these washers are an excellent choice for slots, channels, and other tight spaces.

Magnetic Washers

Made from neodymium, these washers stay in place on iron and steel surfaces for easy mounting and installation.

Lock Washers

Split Lock Washers

As a screw is tightened, these washers flatten to add tension to the joint, counteracting fatigue around the joint from small amounts of vibration.

Metric Split Lock Washers

As a screw is tightened, these metric washers flatten to add tension to the joint, counteracting fatigue around the joint from small amounts of vibration.

Mil. Spec. Split Lock Washers

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

Metric Split Lock Washers for Socket Head Screws

Also known as high-collar lock washers, these metric washers have smaller outside diameters than standard split lock washers to fit neatly under socket head cap screws.

Split Lock Washers for Socket Head Screws

Also known as high-collar lock washers, these have a smaller outside diameter than standard split lock washers to fit neatly under socket head cap screws.

Oversized Split Lock Washers

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

Wedge Lock Washers

Comparable to NORD-LOCK® or Sherex TEC Series 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.

Sealing Washers

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.

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.

Fiber Sealing Washers

Made of fiber, these washers create a seal with minimal torque and reseal better than copper and aluminum washers.

Cushioning Washers

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

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.

Washer Assortments

USS Washer Assortments

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

Washer Assortments

SAE Washer Assortments

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

Oversized Washer Assortments

These washers have exaggerated diameters and/or thicknesses for covering oversized holes or for use as spacers and levelers.

Split Lock Washer Assortments

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

Sealing Washer Assortments

Also known as crush washers, the washers in these assortments compress when tightened to form a tight, durable seal that prevents leaks.

Fastener Maintenance Assortments

Ring Shim Assortments

Shim Assortments for Shortening Shoulder Screws

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

Shim Assortments for Button Dies

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

Ring Shim Assortments

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

Shim Assortments for Lengthening Shoulder Screws

Spin these tight-fitting shims onto your screw's threads to lengthen the shoulder.

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.

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.

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.

Color-Coded Ring Shims

Precisely align, level, and adjust spacing on fasteners, shafts, and machinery with these shims, which are color-coded by thickness for easy identification.

Color-Coded Ring Shim Sets

Be prepared with ring shims in a variety of thicknesses. These shims are color-coded by thickness for easy identification.

Shims for Shortening Screw Shoulders

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

Shims for Lengthening Screw Shoulders

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

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 Ball Bearing Housings

Also called tolerance rings, these rings are for use in stamped, molded, or worn housings to form a tight hold on the bearings.

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 Button Dies

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

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.

Made-to-Order Shims

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

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.

Unthreaded Spacers for Keyed Shafts

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

Thrust Bearings

Light Duty Dry-Running Thrust Bearings

Use where high loads and speeds are not required.

Ultra-Low-Friction Dry-Running Thrust Bearings

Use these bearings in applications with frequent starts and stops because they operate with very little friction.

Water-Resistant Dry-Running Thrust Bearings

Good for underwater applications, these bearings won’t swell or warp when wet.

Food Industry Dry-Running Thrust Bearings

Made of FDA listed materials for use in food applications, these bearings also withstand caustic and washdown environments.

High-Load Dry-Running Thrust Bearings

A metal backing adds strength.

High-Temperature Dry-Running Thrust Bearings

Graphite provides a layer of dry lubrication that operates in high-temperature environments.

Chemical-Resistant Dry-Running Thrust Bearings

These bearings stand up to a wider range of chemicals than other dry-running thrust bearings.

Oil-Embedded Thrust Bearings

Also known as Oilite® bearings.

Ultra-Low-Friction Oil-Embedded Thrust Bearings

For applications with frequent starts and stops, the oil in these bearings contains particles of slippery PTFE that lubricate the bearing during startup.

High-Load Oil-Embedded Thrust Bearings

Increased iron content makes these bearings stronger and more resistant to shock loads than standard oil-embedded bearings; however they operate at lower speeds.

High-Load Ultra-Low-Friction
Oil-Embedded Thrust Bearings

Handle heavy loads that frequently start and stop along shafts—these bearings contain extra iron and slippery PTFE lubricant. They’re thrust bearings, which means they support loads parallel to the shaft.

Food Industry Oil-Embedded Thrust Bearings

The oil in these bearings is NSF registered H1 and FDA compliant for incidental contact with food.

High-Load Food Industry
Oil-Embedded Thrust Bearings

Made of 863 iron-copper and embedded with NSF registered H1 oil, these bearings can tackle high-load applications in food plants, such as bottling and filling lines.

Multipurpose Thrust Bearings

These bronze bearings are strong, wear resistant, and excellent at handling shock loads.

Corrosion-Resistant Thrust Bearings

The addition of iron and aluminum gives these aluminum-bronze bearings high strength and excellent corrosion resistance—making them suitable for use in marine and mining applications.

Thrust Roller Bearings

Washers for Needle-Roller Thrust Bearings

Adapt needle-roller thrust bearings to use on unhardened, unground surfaces.

Needle-Roller Thrust Bearings

Thinner rollers allow these bearings to fit in tighter spaces than tapered-roller thrust bearings.

Flat Disc Springs

These flat rubber springs handle heavy loads, similar to Belleville disc springs, and resist oxidation, oil, and abrasion.

Corrosion-Inhibiting Washers for Battery Terminals

Stop corrosion caused by battery acid fumes leaking at the posts of battery terminals.

Washer-Style Tag Holders

Bolt these holders to a surface and then attach a tag to the small hole.

Faucet Washers

Faucet Washer Assortments

Shaft Grommets

Support shafts, bearings, and other moving parts that are routed through a hole. These grommets are slippery to allow parts to move freely in the hole. Install them on thin sheet-metal panels.

Fastener Kits for Enclosures

Mount components to your enclosure without worrying about leaks—these kits seal out water from washdowns, rain, and snow when used with enclosures rated NEMA 4X.

Washers

General Purpose Washers

Metric General Purpose Washers

SAE Washers

Oversized Washers

Metric Oversized Washers

Mil. Spec. Washers

USS Washers

ASME Washers

Washers with Material Certification

Washers for Structural Applications

Metric Washers for Structural Applications

Tension-Indicating Washers for Structural Applications

Washers for Blind Rivets

Washer Blanks

Plastic Washers

Metric Plastic Washers

Mil. Spec. Plastic Washers

Chemical-Resistant Plastic Washers

Metric Chemical-Resistant Plastic Washers

Mil. Spec. Chemical-Resistant Plastic Washers

Electrical-Insulating Plastic Washers

Metric Electrical-Insulating Plastic Washers

Water- and Steam-Resistant Plastic Washers

Metric Water- and Steam-Resistant Plastic Washers

High-Temperature Plastic Washers

Metric High-Temperature Plastic Washers

Metric Extreme-Temperature Ceramic Washers

Extreme-Temperature Ceramic Washers

High-Temperature Mica Washers

Clipped Washers

Oversized Clipped Washers

Double-Clipped Washers

Square Washers

Square Washers for Blind Rivets

Self-Retaining Washers

Adhesive-Back Washers

Easy-Install Slotted Washers

Rectangular Washers

Magnetic Washers

Lock Washers

Split Lock Washers

Metric Split Lock Washers

Mil. Spec. Split Lock Washers

Metric Split Lock Washers for Socket Head Screws

Split Lock Washers for Socket Head Screws

Oversized Split Lock Washers

Wedge Lock Washers

Sealing Washers

Weather-Resistant Rubber Sealing Washers

Abrasion-Resistant Rubberand Plastic Sealing Washers

Oil-Resistant Rubber Sealing Washers

Chemical-Resistant Rubber Sealing Washers

Metal Sealing Washers

Fiber Sealing Washers

Cushioning Washers

Cushioning Washers

Abrasion-Resistant Cushioning Washers

Abrasion-Resistant Leather Washers

Moisture-Resistant Cushioning Washers

Washer Assortments

USS Washer Assortments

Washer Assortments

SAE Washer Assortments

Oversized Washer Assortments

Split Lock Washer Assortments

Sealing Washer Assortments

Fastener Maintenance Assortments

Fastener Maintenance Assortments

Ring Shim Assortments

Shim Assortments for Shortening Shoulder Screws

Shim Assortments for Button Dies

Ring Shim Assortments

Shim Assortments for Lengthening Shoulder Screws

Round Shims

Ring Shims

Ring Shim Sets

Wide-Rim Ring Shims

Tight-Fit Ring Shims

Peel-Away Layered Ring Shims

Abrasion-Resistant Rubber
and Plastic Sealing Washers

High-Load Ultra-Low-Friction
Oil-Embedded Thrust Bearings

High-Load Food Industry
Oil-Embedded Thrust Bearings