Manufacturer Part Number: 39750|Washer Type|USSMaterial|SteelMaterial Grade|8Screw Size|1/4 inThread Size|Inside Diameter (Inch)|5/16Inside Diameter (Decimal Inch)|Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|3/4Outside Diameter (Decimal Inch - 4 Decimals)|Thickness (mm)|Thickness (Inch)|1/16Thickness (Decimal Inch - 4 Decimals)|Standards|Finish Coating|Yellow Zinc DichromateFastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807