Manufacturer Part Number: FWSIS0-40-1LBBX|Washer Type|SAEMaterial|SteelMaterial Grade|2Screw Size|#4Thread Size|Inside Diameter (Inch)|1/8Inside Diameter (Decimal Inch)|Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|5/16Outside Diameter (Decimal Inch - 4 Decimals)|Thickness (mm)|Thickness (Inch)|Thickness (Decimal Inch - 4 Decimals)|0.0400Standards|Finish Coating|ZincFastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807