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734929031001
5/16 Flat Washer SAE, Heavy, Steel Zinc Yellow

  • While washers protect surfaces by evenly distributing torque when tightening a bolt or screw and prevent corrosion between a steel screw and an aluminum surface, Extra Thick or Heavy Flat washers reduce the risk of deformation and add extra strength to fastening applications.
Product Specifications
Screw Dia. 5/16"
Inside Dia. .344"
Outside Dia. 11/16"
Thickness .090/.110
Rockwell Hardness RC38-RC45