At Fastener SuperStore, we specialize in washers of all types, and we are committed to delivering high-quality materials for all of your contracting and construction projects. See our full product listing below, how washers are used for different applications, and information about what Fastener SuperStore can do for you.

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Download Printable Size Guides:
SAE Washer Size Guide (PDF)
Machine Screw Washer Size Guide (PDF)
USS Washer Size Guide (PDF)


Washer Close Up

Flat Washers

Flat Washers

Flat Washers
Flat washers include a wide variety of styles, materials, and finishes. They can be used with machine screws and a variety of bolts.

USS flat washers are used for a variety of applications. SAE flat washers are common to the automotive industry.


Steel / Zinc
Steel / Black Oxide
Steel / Black Zinc
Steel / Zinc Yellow
Steel / Hot Dip Galvanized
Nylon

18-8 Stainless Steel
18-8 Stainless Steel / Black Oxide
316 Stainless Steel
300 Series Stainless Steel
Grade 9 / EcoGuard
Aluminum

Fender Washers

Fender Washers

Fender Washers
Featuring larger outer diameter options than flat washers, fender washers offer a larger bearing surface while using a thinner gauge metal.


Material / Finish Options:
Steel / Zinc
Steel / Black Oxide
Steel / Hot Dip Galvanized
18-8 Stainless Steel
18-8 Stainless Steel / Black Oxide
316 Stainless Steel



Lock Washers

Internal Tooth

Internal Tooth Lock Washers

Internal Tooth Lock Washers
Internal Tooth Lock Washers feature twisted internal prongs that allow them to dig and lock into the adjacent material, while providing a finished look on the exposed outer diameter.


Material / Finish Options:
Steel / Zinc
Steel / Black Oxide
Steel / Black Zinc
Steel / Zinc Yellow
18-8 Stainless Steel
410 Stainless Steel

External Tooth

External Tooth Lock Washers

External Tooth
External Tooth Lock Washers feature twisted prongs extending from the outer edge and offer a larger locking radius than other lockwashers, providing greater holding strength.


Material / Finish Options:
Steel / Zinc
Steel / Black Oxide
Steel / Black Zinc
Steel / Zinc Yellow
18-8 Stainless Steel
18-8 Stainless Steel / Black Oxide
410 Stainless Steel

Internal/External Combo

Internal/External Combo

Internal / External Combo Tooth Lock Washers
Internal / External Combo Tooth Lock Washers feature twisted prongs on both the inner and outer edges. The teeth lock into the bearing surface to dig and lock with the adjacent material.


Material / Finish Options:
Steel / Zinc
Steel / Black Oxide
Steel / Zinc Yellow
18-8 Stainless Steel

External Tooth Lock Washers


Beveled Washers

Beveled Washers

Beveled Washers
Used with structural bolts, beveled washers feature one bearing surface with an oblique angle and are useful in applications such as attaching through the flanges of an l-beam.


Available in Hardened Steel with a Plain finish.

Countersunk Finishing

Countersunk Finishing Lock Washers

Countersunk Finishing Lock Washers
The shape of a countersunk finishing washer provides a decorative look and works with flat or oval head screws.


Material / Finish Options:
Steel / Nickel
Steel / Black Oxide
Steel / Black Zinc
Stainless Steel
18-8 Stainless Steel
316 Stainless Steel

Stack of Washers

Dock Washers

Dock Washers

Dock Washers
Dock washers offer significantly greater thickness than other washer styles. They're commonly used in dock and construction applications.


Material / Finish Options:
Steel / Plain
Steel / Hot Dip Galvanized

Sealing Washers

Sealing Washers

Sealing Washers
Sealing Washers feature a thin, conical washer that is bonded to a similarly shaped rubber-like piece. When the washers are assembled (rubber side down), they provide a seal.


Material / Finish Options:
Steel / Galvanized
18-8 Stainless Steel

Washer

Shoulder Washers

Shoulder Washers

Shoulder Washers
Shoulder Washers feature an extended sleeve on the internal surface, which is inserted into the adjacent material. This allows the shoulder washer to unsulate metal screws in electrical applications. Can also be used to reduce friction between parts.


Available in Natural White Nylon.

Structural Washers

Structural Washers

Structural Washers
Structural Washers are used with structural bolts and nuts. They are manufactured from high grade steel and heat threaded.


Available in a Plain finish.

Thru Hard Washers

Thru Hard Washers

Thru Hard Washers
Thru Hard Washers are designed for use with high strength hardened bolts. They offer tighter tolerances and are manufactured from higher grade steel than their counterparts.


Material / Finish Options:
SAE / Steel / Zinc Yellow
SAE / Heavy Duty / Steel / Zinc Yellow
USS / Steel / Plain
USS / Steel / Zinc Yellow
USS / Grade 9 / EcoGuard
USS / Heavy Duty / Steel / Zinc Yellow

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Mil-Spec Flat Washers

Flat Washers

Mil-Spec Flat Washers


Material / Finish Options:
Steel / Cadmium Yellow
18-8 Stainless Steel
300 Series Stainless Steel
300 Series Stainless Steel / Black Oxide Finish
Light Washer option available in 300 Series Stainless Steel

Machine Screw Washers

Mil-Spec Machine Screw Washers


Material / Finish Options:
Steel / Cadmium Yellow
18-8 Stainless Steel

Internal Tooth Lock Washers

Mil-Spec Internal Tooth Lock Washers


Material / Finish Options:
Steel / Cadmium Yellow
Steel / Zinc Yellow
300 Series Stainless Steel
410 Stainless Steel

External Tooth Lock Washers

Mil-Spec External Tooth Lock Washers


Material / Finish Options:
Steel / Plain
Steel / Zinc Yellow
410 Stainless Steel
Grade 9 / EcoGuard

Split Lock Washers

Mil-Spec Split Lock Washers


Material / Finish Options:
Steel / Cadmiun Yellow
Steel / Zinc Yellow
316 Stainless Steel
400 Series Stainless Steel
High Collar option available in Steel / Zinc Yellow or Steel / Black Phosphate

Stack of Washers