Manufacturer Part Number: 42612G|Washer Type|StandardMaterial|Case-Hardened SteelMaterial Grade|1010Screw 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)|5/64Thickness (Decimal Inch - 4 Decimals)|Standards|Finish Coating|Black OxideFastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807