Manufacturer Part Number: KP80402|Washer Type|USSMaterial|Carbon SteelMaterial Grade|9Screw Size|3/8 inThread Size|Inside Diameter (Inch)|13/32Inside Diameter (Decimal Inch)|0.3960Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|Outside Diameter (Decimal Inch - 4 Decimals)|1.0000Thickness (mm)|Thickness (Inch)|5/64Thickness (Decimal Inch - 4 Decimals)|0.0780Standards|Finish Coating|Clear Zinc ChromateFastener Standard|ASTM F436Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807