Steel Washers

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Washers are thin, disc or square-like fasteners used to evenly distribute the load of a bolt or nut. We offer structural steel fasteners and construction washers in a broad range of styles, diameters, and thicknesses for use in both light-duty and heavy-duty applications. Browse flat washers, structural washers, plate washers, F436 washers, SAE washers, and much more. Sizes range from 1/4” to 3” with your choice of mild steel, A325 structural steel, zinc-coated steel, galvanized steel, or stainless steel material.

Fastco Inc. partners with brands you trust to stock durable fasteners for our customers across a number of industries. Our extensive inventory and exceptional customer service make Fastco the right choice for all your fastener needs. Receive fast shipping on steel washers ordered online or visit our store in Tacoma, WA to browse fasteners in the size and style you need. We offer volume discounts for bulk and wholesale orders. Request a quote today or contact us for more information.

Construction Washers for Structural Steel, Sheet Metal, & Woodworking Applications


Flat Washers

Flat washers are placed under the head of a bolt or nut to provide a smooth bearing surface and evenly distribute loads. Available in diameters ranging from 1/4” to 3” and in a range of finishes, including 18-8 stainless steel, 316 stainless steel, galvanized steel, plain steel, and zinc-coated steel.


Structural Washers

Structural washers are designed for use with A325 structural bolts, studs, and nuts used in heavy duty construction or exterior building applications. Available in diameters ranging from 1/4"x5/8” to 1-3/4”x3-3/8”. Choose from galvanized steel, plain steel, or zinc coated steel finish options.


Fender Washers

Fender washers have a large outer diameter compared to the inner diameter, allowing them to evenly distribute loads over large surface areas—usually thin metal. Available in diameters ranging from 1/8”x3/4” to 1/2"x2”. Material options include black-oxide steel, 316 stainless steel, 18-8 stainless steel, zinc and zinc yellow-chromate plated steel, and hot-dipped galvanized steel.


Plate Washers

Plate washers are used in woodworking applications to prevent the heads of bolts or nuts from pulling into the wood. Available in diameters ranging from 3/8”x2”x3/16” to 1-1/2”x6”x3/8”. Finish options include either plain steel or hot-dipped galvanized steel.


SAE Washers

SAE washers comply with specifications set by the Society of Automotive Engineers, often featuring smaller outer diameters and thinner gauges compared to U.S. standard washers. Diameters for SAE washers range from 1/4” to 1-1/2”. Available in hot-dipped galvanized steel, zinc-coated steel, or plain steel.


Split Lock Washers

Split lock washers are helical shaped, split rings designed to prevent fasteners from loosening in applications involving vibrations. Split lock washers are available in diameters ranging from 1/4" to 2”. Choose from hot-dipped galvanized steel, zinc-coated steel, or plain steel finish options.


Additional Metal Washers & Fasteners in the Size & Material You Need

Apart from the options listed above, we also offer a wide range of additional washer styles in the size and material required for your application. Contact us for more information regarding our selection of:
  • Lock Washers
  • Square Washers
  • Bevel Washers
  • Malleable Iron Washers
  • High Collar Lock Washers
  • Internal Tooth Washers
  • External Tooth Washersmetal
Looking for something else? We carry an extensive selection of nuts, bolts, screws, anchors, and more. Browse our online inventory or call us at (253) 383-1767 to find the industrial fasteners you require.


Buy Your Washer Fasteners Online Today or Stop By Our Tacoma Store!

Fastco has over 60 years of experience providing fasteners of all types to our customers throughout the industrial and construction industries. Between our large inventory and knowledgeable staff, you’re sure to find exactly what you need. Request a quote today to take advantage of fast shipping and volume discounts on bulk orders. Get in touch with an expert for more information.