Manufacturer Part Number: Z9185-BEV-SS|Washer Type|Beveled RoundMaterial|Stainless SteelMaterial Grade|18-8Screw Size|1/2 inThread Size|Inside Diameter (Inch)|17/32Inside Diameter (Decimal Inch)|0.5313Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|1Outside Diameter (Decimal Inch - 4 Decimals)|1.0000Thickness (mm)|Thickness (Inch)|3/16Thickness (Decimal Inch - 4 Decimals)|0.1875Standards|Finish Coating|Fastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807