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

18-8 stainless steel washers have excellent corrosion resistance in most environments and may be mildly magnetic.

316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.

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

Fiberglass washers are stronger than Delrin® acetal plastic washers and have excellent resistance to salt water. Color ranges from light green to light tan.

Delrin® acetal plastic washers combine a slippery, wear-resistant surface with good strength and rigidity.

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The extra-tall sleeve extends into holes to provide more protection than other rolled-collar washers. As you tighten your screw, the rolled collar compresses under the head to create an insulating barrier between a screw shank and a mating surface. These nylon washers block electrical current and prevent galvanic corrosion from mating different types of metal. Exposure to moisture may cause them to expand.

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

18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.

A specially shaped ID grips your screw shank tightly. All of these washers are good electrical insulators.

Nylon washers are more wear resistant than polyethylene washers. They are not, however, as moisture resistant.

Polyethylene washers are softer, more flexible, and withstand moisture better than nylon washers. They are not as wear resistant.

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As you tighten a bolt, these metric washers flatten to add tension to the threaded joint and prevent loosening from small amounts of vibration. All of these washers meet a DIN or ASME standard for split lock washer dimensions.

Standard split lock washers have a left-hand helix, which means you can only use them with bolts that have right-hand threads to prevent clockwise rotation from vibration. When tightened, their uneven split ends bite into unhardened nuts and bolts for a tighter hold than curved or wave washers, but only for applications with clockwise rotation. The washers, nuts, and bolts will be deformed when untightened, so none of them can be reused. Do not use these washers on hardened surfaces.

Curved and wave split lock washers can be used with bolts that have right- or left-hand threads to prevent clockwise or counterclockwise rotation from vibration. Although they don’t grip as tight as standard split lock washers for applications with clockwise rotation, they are best for those with counterclockwise rotation. These washers retain their shape when untightened and will not damage nuts and bolts, so all can be reused.

Stainless steel washers are more corrosion resistant than steel, and nearly as strong. 18-8 stainless steel washers are good for humid, damp, and washdown environments, but will corrode when exposed to salt water and other chlorine solutions. 316 stainless steel washers have the best corrosion resistance. They stand up to wet environments, just like 18-8 stainless steel washers, but unlike 18-8 stainless steel, they resist corrosion caused by salt water, chlorine solutions, and chemicals.

Use zinc-plated and yellow zinc-plated steel washers in mostly dry environments. The zinc plating offers temporary rust protection, but once it wears away the steel will rust. All of these washers are stronger and more wear resistant than stainless steel.

Steel washers are stronger and more wear resistant than zinc-plated steel and stainless steel. Use them in dry environments because they will rust in wet and corrosive environments.

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Teeth on the outside edge of these washers bite into the screw head and joint for a tight grip. Use with fasteners that have heads large enough to make contact with the teeth, such as pan, button, and binding head screws.

Zinc-plated steel washers are corrosion resistant in wet environments.

18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

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Internal teeth dig into the screw head while the smooth outside edge won't snag objects. These washers provide greater vibration resistance than split lock washers. Use with fasteners that have small heads, such as fillister and cheese head screws.

Black-oxide steel washers are mildly corrosion resistant in dry environments.

Zinc-plated steel washers resist corrosion in wet environments.

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These washers have smaller outside diameters than standard spring lock washers to fit neatly under socket head cap screws. 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. They minimize loosening from wear, temperature changes, and vibration. Serrations on the top and bottom provide extra gripping power. Load-rated Belleville disc springs are also available.

18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.

These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces. You can also use them to damp vibration.

18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.