Extra Thick Flat Washers Grade 8 Yellow Zinc

Extra Thick Flat Washers

Hardened Flat Washers in Grade 8 Yellow Zinc Plated Steel


  • Grade 8 extra thick flat washers are made to distribute extra pressure from fasteners
  • Less likely to damage the material
  • Used to distribute loads of threaded fasteners
  • Grade 8 yellow zinc is corrosion resistant
  • Can act as spacers on a fastener
  • Commonly used on:
    • Decks
    • Docks
    • Large Timber Projects
  • REACH and RoHS Compliant

Extra Thick Flat Washer Specifications

Washer Sizes Inner Diameter (ID) Outer Diameter (OD) Thickness
1/4" 9/32" (0.281") 5/8" (0.625") Max 0.125" - Min 0.100"
5/16" 0.344" 0.688" Max 0.125" - Min 0.100"
7/16" 0.469" 0.922" Max 0.125" - Min 0.100"
1/2" 0.531" 1.062" Max 0.125" - Min 0.100"
9/16" 19/32" (0.594") 1-5/32" (1.156") 3/16" (0.1875")
5/8" 21/32" (0.656") 1-5/16" (1.3125") 3/16" (0.1875")
3/4" 13/16" (0.8125") 1-15/32" (1.469") 3/16" (0.1875")
7/8" 15/16" (0.9375") 1-3/4" (1.75") 3/16" (0.1875")
1" 1-1/16" (1.0625") 2" 1/4" (0.25")
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