Manufacturer Part Number: KP80406-2|Washer Type|USSMaterial|SteelMaterial Grade|9Screw Size|5/8 inThread Size|Inside Diameter (Inch)|21/32Inside Diameter (Decimal Inch)|0.6460Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|Outside Diameter (Decimal Inch - 4 Decimals)|1.7500Thickness (mm)|Thickness (Inch)|9/64Thickness (Decimal Inch - 4 Decimals)|0.1400Standards|Finish Coating|Clear Zinc ChromateFastener Standard|ASTM F436Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807