Flat Washers 304 Stainless Steel

Stainless Steel Flat Washers

Standard Round Washers in 304 Stainless Steel


A 304 stainless steel flat washer is a round outer diameter thin plate with a center hole (inner diameter) punched to the size of the bolt or screw size.

  • Used to distribute fastener pressure evenly
  • Can act as a flat surface area for nut or bolt to tighten against
  • Washer Thickness may very +/- .007 depending on production run
  • IFI Tolerances Apply
  • 304 stainless steel flat washers are corrosion resistant

Flat Washer Sizes Inner Diameter (ID) Outer Diameter (OD) Washer Thickness
#4 0.125" 0.312" 0.031"
#6 0.149" 0.375" 0.031"
#8 0.174" 0.375" 0.031"
#10 0.203" 0.437" 0.063"
#12 0.250" 9/16" 0.050"
1/4" 0.281" 5/8" 0.050"
5/16" 0.343" 3/4" 0.050"
3/8" 0.406" 7/8" 0.050"
7/16" 0.500" 1-1/8" 0.062"
1/2" 0.531" 1-1/4" 0.062"
9/16" 0.625" 1-3/8" 0.078"
5/8" 0.687" 1-1/2" 0.078"
3/4" 0.812" 1-7/8" 0.109"
7/8" 0.937" 2" 0.109"
1" 1.062" 2" 0.125"
1-1/8" 1.187" 2-1/2" 0.125"
1-1/4" 1.312" 2-3/4" 0.125"
1-3/8" 1.500" 3-1/4" 0.140"
1-1/2" 1.562" 3-1/4" 0.140"
1-3/4" 1.812" 3-1/2" 0.140"
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Product Specifications
Corrosion Resistant
Yes
Grade
304
Material
Stainless Steel
System of Measurement (Unit)
Inch
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances