Manufacturer Part Number: FWUI81371-025BX|Washer Type|USSMaterial|Alloy SteelMaterial Grade|8Screw Size|1-3/8 inThread Size|Inside Diameter (Inch)|Inside Diameter (Decimal Inch)|1.4930Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|Outside Diameter (Decimal Inch - 4 Decimals)|2.7800Thickness (mm)|Thickness (Inch)|Thickness (Decimal Inch - 4 Decimals)|0.2130Standards|Finish Coating|Yellow Zinc DichromateFastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|