Flat Washers Structural F436 Plain

Structural Washers

F436 Flat Washers


  • Thick, strong, and heavy duty washers
  • Typically found in steel to steel structural connections
  • Usually applied with structural bolts and nuts to beams or girders
  • Compatible with A325 and A490 Structural Bolts
  • Used to distribute fastener load evenly as fastener is tightened
  • Plain steel
  • May contain a light coating of oil
  • IFI Tolerances Apply
  • Washer Thickness may very +/- .007 depending on production run

Structural Flat Washer Specifications

Flat Washer Sizes Inner Diameter (ID) Outer Diameter (OD) Washer Thickness
1/2" 0.531" 1.063" 0.177"
5/8" 0.688" 1.313" 0.177"
3/4" 0.813" 1.468" 0.177"
7/8" 0.938" 1.750" 0.177"
1" 1.063" 2.000" 0.177"
1-1/8" 1.188" 2.250" 0.177"
1-1/4" 1.375" 2.500" 0.177"
1-3/8" 1.500" 2.750" 0.177"
1-1/2" 1.625" 3.000" 0.177"
1-3/4" 1.875" 3.375" 0.280"
3" 3.125" 5.500" 0.340"
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