Manufacturer Part Number: 42605G|Washer Type|StandardMaterial|Case-Hardened SteelMaterial Grade|1010Screw Size|1/2 inThread Size|Inside Diameter (Inch)|17/32Inside Diameter (Decimal Inch)|Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|1-1/8Outside Diameter (Decimal Inch - 4 Decimals)|Thickness (mm)|Thickness (Inch)|1/8Thickness (Decimal Inch - 4 Decimals)|Standards|Finish Coating|Black OxideFastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807