Manufacturer Part Number: Z9276|Washer Type|StructuralMaterial|Alloy SteelMaterial Grade|Screw Size|5/8 inThread Size|Inside Diameter (Inch)|21/32Inside Diameter (Decimal Inch)|0.6563Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|1-5/16Outside Diameter (Decimal Inch - 4 Decimals)|1.3125Thickness (mm)|Thickness (Inch)|7/32Thickness (Decimal Inch - 4 Decimals)|0.2188Standards|Finish Coating|Yellow Zinc DichromateFastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807