Manufacturer Part Number: Z9271|Washer Type|StructuralMaterial|Alloy SteelMaterial Grade|Screw Size|5/16 inThread Size|Inside Diameter (Inch)|11/32Inside Diameter (Decimal Inch)|0.3438Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|11/16Outside Diameter (Decimal Inch - 4 Decimals)|0.6875Thickness (mm)|Thickness (Inch)|3/32Thickness (Decimal Inch - 4 Decimals)|0.0938Standards|Finish Coating|Yellow Zinc DichromateFastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|