Manufacturer Part Number: BOWKP80403-2|Washer Type|USSMaterial|SteelMaterial Grade|9Screw Size|7/16 inThread Size|Inside Diameter (Inch)|15/32Inside Diameter (Decimal Inch)|0.4590Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|1-1/4Outside Diameter (Decimal Inch - 4 Decimals)|1.2500Thickness (mm)|Thickness (Inch)|3/32Thickness (Decimal Inch - 4 Decimals)|0.0980Standards|Finish Coating|Bowma-GuardFastener Standard|ASTM F436Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807