FASTENER SUPERSTORE
FASTENER GUIDE
Washer Types
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.
Download Printable Size Guides:
SAE Washer Size Guide (PDF)
Machine Screw Washer Size Guide (PDF)
USS Washer Size Guide (PDF)
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
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 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
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 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
Split Lock Washers
Split Lock Washers
Split Lock Washers feature offst split ends, which create
tension when it is clamped down, creating a strong hold.
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
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
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 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
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 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 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
FASTENER BUYING MADE SIMPLE
The Fastener Superstore is your one stop shop for screws, nuts, bolts, washers, rivets, standoffs and more! We have everything you need right here.
- Same Day Shipping on Most Orders
- Order online, via phone, email or fax
- Extended Customer Service Hours
- Quotes Available for Larger Quantities
- 45,000+ Distinct Parts
- All Pricing Online
- No Registration Required
Mil-Spec Flat Washers
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
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
