Washer Sets | McMaster-Carr

	Washer Type Washer Type


Flat	Split Lock

Tooth Lock	Beveled

Spring Lock	Sleeve

	Material Material

	Finish Finish

Zinc Plated

Black Oxide

Painted

Zinc Yellow-Chromate Plated

	System of Measurement System of Measurement

Inch

Metric

	Number of Pieces Number of Pieces

8
10
13
18
19
26
30
100
120
130
151
160
180
200
212
226
240
245
260
300
325
350
380
382
385
386
436
450
500
550
590
611
755
757
825
850
910
1,020
1,050
1,110
1,168
1,280
1,335
1,350
1,440
1,500
1,520
1,550
1,680
2,200
3,342
7,060

	Container Type Container Type

	Container Depth Container Depth

	Container Features Container Features

Compartmented

Lid Chart

	Tooth Location Tooth Location

External

Internal

	Container Width Container Width

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Container Length Container Length

	Specifications Met Specifications Met

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

REACH Compliant

	Head Type Head Type

	Drive Style Drive Style

	ID ID

	OD OD

	Shape Shape


Slotted	Ring

Keyed	D-Profile

Round

	Cross Section Shape Cross Section Shape


Round	Square

X

	Slot Width Slot Width

	Width Width

180 Products

Fastener Assortments

Washer Assortments

SAE Washer Assortments

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

USS Washer Assortments

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

Tooth Lock Washer Assortments

Teeth bite into the joint for a tighter grip than split lock washers.

Sleeve Washer Assortments

Also known as shoulder and insulator washers, these nonmetal washers block electrical current and prevent corrosion from mating different types of metal.

Fastener Maintenance Assortments

Hex Head Screw Assortments

These assortments include hex head screws and hex nuts.

Unthreaded Spacer Assortments

Have different sizes and lengths of spacers ready for a variety of jobs.

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.

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.

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.

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.

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.

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.

Faucet Washer Assortments

O-Ring Assortments

Square-Profile Oil-Resistant
Buna-N O-Ring Assortments

These O-rings have a square profile with flat edges on all four sides. They cover more surface than round-profile O-rings for a better seal in static applications, such as hose, pipe, and faucet connections.

Oil-Resistant Hard Buna-N O-Ring Assortments
for Tube Fittings with Straight-Thread Connection

Also known as Boss O-rings, these hard O-rings are for use in tube fittings with a straight-thread connection.

Oil-Resistant Buna-N O-Ring Assortments

All of the O-rings in these assortments are made of Buna-N. They resist animal, vegetable, and motor oils.

Oil-Resistant Soft Buna-N O-Ring Assortments

Softer than standard Buna-N O-rings for a better seal in low-pressure applications.

Oil-Resistant Hard Buna-N O-Ring Assortments

These O-rings are harder than standard Buna-N O-rings for better resistance to wear.

X-Profile Oil-Resistant Buna-N O-Ring Assortments

Also known as Quattro Seals and X-rings, these X-profile O-rings have four points of contact for a better seal in dynamic applications than round-profile O-rings. They also require less compression to make a seal, so they offer a longer service life.

Water- and Steam-Resistant O-Ring Assortments

In addition to water and steam, these EPDM O-Rings resist ethanol and ethylene glycol.

Oil- and Chemical-Resistant O-Ring Assortments

These assortments contain a mix of Buna-N O-rings that resist oil and Viton® fluoroelastomer O-rings that resist boric acid, fuels, and transmission fluid.

Chemical-Resistant Viton®
Fluoroelastomer O-Ring Assortments

All of the O-rings in these assortments are Viton® fluoroelastomer and resist isopropyl alcohol, mineral oils, and transmission fluid.

Chemical-Resistant Hard Viton®
Fluoroelastomer O-Ring Assortments for
Tube Fittings with Straight-Thread Connection

Also known as Boss O-rings, these hard Viton® fluoroelastomer O-rings are for use in tube fittings with a straight-thread connection. They offer excellent resistance to wear.

High-Temperature O-Ring Assortments

Able to withstand heat up to 450° F, these O-rings maintain a strong seal even when the temperature rises.

Water- and Steam-Resistant and
High-Temperature O-Ring Assortments

These assortments include a mix of EPDM O-rings that resist water and steam and silicone O-rings that resist temperatures up to 450° F.

Ultra-Chemical-Resistant Rigid
PTFE O-Ring Assortments

Rigid and hard with a slippery surface, these O-rings resist harsh chemicals, such as acetone, fluorinated solvents, methanol, and boric nitric, and sulfonic acids.

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.

Fastener Assortments

Washer Assortments

SAE Washer Assortments

USS Washer Assortments

Oversized Washer Assortments

Split Lock Washer Assortments

Tooth Lock Washer Assortments

Sleeve Washer Assortments

Fastener Maintenance Assortments

Hex Head Screw Assortments

Unthreaded Spacer Assortments

Shims

Ring Shim Sets

Color-Coded Ring Shim Sets

Shim Sets for D-Profile Shafts

Shim Sets for Keyed Shafts

Slotted Shim Sets

Color-Coded Slotted Shim Sets

Faucet Washer Assortments

Faucet Washer Assortments

O-Ring Assortments

Square-Profile Oil-ResistantBuna-N O-Ring Assortments

Oil-Resistant Hard Buna-N O-Ring Assortmentsfor Tube Fittings with Straight-Thread Connection

Oil-Resistant Buna-N O-Ring Assortments

Oil-Resistant Soft Buna-N O-Ring Assortments

Oil-Resistant Hard Buna-N O-Ring Assortments

X-Profile Oil-Resistant Buna-N O-Ring Assortments

Water- and Steam-Resistant O-Ring Assortments

Oil- and Chemical-Resistant O-Ring Assortments

Chemical-Resistant Viton®Fluoroelastomer O-Ring Assortments

Chemical-Resistant Hard Viton®Fluoroelastomer O-Ring Assortments for Tube Fittings with Straight-Thread Connection

High-Temperature O-Ring Assortments

Water- and Steam-Resistant andHigh-Temperature O-Ring Assortments

Ultra-Chemical-Resistant RigidPTFE O-Ring Assortments

Fastener Kits for Enclosures

Fastener Kits for Enclosures

Square-Profile Oil-Resistant
Buna-N O-Ring Assortments

Oil-Resistant Hard Buna-N O-Ring Assortments
for Tube Fittings with Straight-Thread Connection

Chemical-Resistant Viton®
Fluoroelastomer O-Ring Assortments

Chemical-Resistant Hard Viton®
Fluoroelastomer O-Ring Assortments for
Tube Fittings with Straight-Thread Connection

Water- and Steam-Resistant and
High-Temperature O-Ring Assortments

Ultra-Chemical-Resistant Rigid
PTFE O-Ring Assortments