Mutual Screw & Supply

#3 x 5/16" OD Flat Washers | .040" Thick | Steel Zinc Yellow (5000 / Pkg.)

#3 x 5/16" OD Flat Washers | .040" Thick | Steel Zinc Yellow (5000 / Pkg.) - Main image
$26.23 $43 In stock

These flat washers are manufactured from Steel with a zinc yellow finish. They are well suited to distributing load and protecting surfaces under fasteners.

  • Material and finish: Steel, Zinc Yellow finish
  • Applications: Distributing load and protecting surfaces under fasteners

Specifications

  • Product type: Flat Washers
  • Material: Steel
  • Finish: Zinc Yellow
  • Measurement type: Imperial
  • Dimensions: .103" ID x .312" OD x .040" Thick
  • Pack quantity: 5000 per package

Please note: This item is excess stock and is sold non-cancelable, non-refundable, and non-returnable. Please call us with any questions about this item before ordering.

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When it ships

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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If you need a refund

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Elizabeth Y. ★★★★★

I needed a big box of reliable washers for my workbench projects, and these 5/16" OD ones are exactly the right size for distributing load on bolts. The 0.040" thickness feels sturdy, and the steel zinc yellow finish has held up well without rust so far.

Ruby S. ★★★★★

The zinc yellow coating is a nice touch for outdoor projects—didn’t expect the color to look this uniform across all 5000 pieces. I used them to spread the load on some thin sheet metal and they sat flush without any warping. That .040" thickness feels just right for the job.

Natalie ★★★★★

Finally got a full box of these #3 washers and they're exactly as described—040 thick and zinc yellow plated. Used a hundred already on a trailer frame and they hold tight without rusting in the first rain. Great value for the quantity, the .040 thickness feels sturdy enough for most general fasteni