Large, thick, flat Fender Washers feature a large outside diameter—approximately 3 times the bolt diameter—that provides an extra-wide bearing surface for distributing force/stress over a wider area or for covering an oversized hole.
Flat Washer TypeFender Washer
Washer Basic MaterialStainless Steel
System of MeasurementInch
Washer Material Grade316
Fits Bolt Sizes3/8"
Washer Inside Dia.13/32"
Washer Outside Dia.1-5/8"
Thickness Tolerance0.047" to 0.08"
Washer StandardsASME B18.211
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