Manufacturer Part Number: KP80416|Washer Type|SAE; USSMaterial|Carbon SteelMaterial Grade|9Screw Size|1/2 inThread Size|Inside Diameter (Inch)|17/32Inside Diameter (Decimal Inch)|0.5260Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|Outside Diameter (Decimal Inch - 4 Decimals)|1.0620Thickness (mm)|Thickness (Inch)|3/32Thickness (Decimal Inch - 4 Decimals)|0.0930Standards|Finish Coating|Clear Zinc ChromateFastener Standard|ASTM F436Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807