Manufacturer Part Number: Z9181-BEV-SS|Washer Type|Beveled RoundMaterial|Stainless SteelMaterial Grade|18-8Screw Size|1/4 inThread Size|Inside Diameter (Inch)|9/32Inside Diameter (Decimal Inch)|0.2813Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|5/8Outside Diameter (Decimal Inch - 4 Decimals)|0.6250Thickness (mm)|Thickness (Inch)|1/8Thickness (Decimal Inch - 4 Decimals)|0.1250Standards|Finish Coating|Fastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807