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5/16" USS Flat Washers, Steel Zinc Plated

Item Code: 31NWUSZ/C



Availability: available for order, usually ships within 3-5 business days
NY   in stock, ships same day if ordered by 2 p.m. EST.

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Unit Size: 100
Pkg Qty: 1
Item Weight: 1.00 lbs
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5/16" USS Flat Washers, Steel Zinc Plated

Flat Washers are a thin, flat, circular steel part with a centrally located hole. Washers are designed for assembly around a bolt or screw, between the bearing surface of the fastener and the part to which it is attached.

  • Additional Info
  • Features
  • Document & Guides
  • Technical Specs

Additional Info


  • Flat washers are used to improve stress distribution, and to span large clearance holes
  • USS washers are designed to meet the majority of industrial applications in manufacturing, maintenance, and repair
  • USS pattern is the most common type of flat washer

Technical Specs

Product TypeUSS Flat Washer
MaterialCarbon Steel
FinishZinc Plated
Inner Diameter3/8"
Outer Diameter7/8"