Hillman Zinc-Plated Steel 5/16 in. Fender Washer, 100-Pack

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Hillman 5/16 in. Zinc-Plated Fender Washers (100-Pack)

Durable zinc-plated steel fender washers with a large outer diameter to distribute load and prevent pull-through. Ideal for sheet metal, plumbing, electrical, and general repair projects where added bearing surface is needed.


Key Features:

  • Load Distribution: Wide OD spreads force to protect materials and reduce surface deformation
  • Corrosion Resistant: Zinc-plated steel stands up to moisture and everyday wear
  • Versatile Applications: Common in sheet metal, plumbing, and electrical work
  • Secure Fastening: Helps prevent nuts, bolts, or screws from pulling through
  • Bulk Convenience: 100-pack keeps projects moving and reduces trips for replacements

Specifications Table:

Specification Details
Material Zinc-plated steel
Washer Type Fender washer
Size (fastener/ID) 5/16 in. (approx. 0.31 in.)
Outer Diameter 1.63 in.
Finish Zinc-plated
Pack Quantity 100
Manufacturer Part Number 290030
Approximate Package Weight 4 lb

Frequently Asked Questions (FAQ):

Q: What size fastener do these work with?
A: They are sized for 5/16-inch fasteners (approx. 0.31 in. inner diameter).


Q: What are the washer dimensions?
A: Approximate size is 0.31 in. inner diameter x 1.63 in. outer diameter.


Q: Are these washers rust resistant?
A: Yes. They are zinc-plated steel for improved corrosion resistance in general indoor/outdoor use.


Q: How many washers come in a package?
A: 100 washers per pack.


Q: What projects are these suited for?
A: Use where a larger bearing surface is needed—sheet metal work, plumbing, electrical, and general repairs.


A Sleek, Functional Accent for Clean, Confident Installs

There’s a quiet elegance to hardware that performs beautifully while disappearing into the design. These zinc-washed fender washers offer a crisp, silvery profile and a generous diameter that feels intentional, not incidental. Pair them with matte black fasteners on raw plywood for a modern, utilitarian statement, or keep them subtle against galvanized finishes. Consider them the refined underpinning of a polished, luxury-level install.


Upgrade your fastening kit with these corrosion-resistant, load-spreading fender washers and finish your next project with confidence.

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