Manufacturer Part Number: 31961|Washer Type|StandardMaterial|SteelMaterial Grade|Screw Size|5/8Thread Size|Inside Diameter (Inch)|21/32Inside Diameter (Decimal Inch)|Inside Diameter (mm)|16.67Outside Diameter (mm)|38.10Outside Diameter (Inch)|1-1/2Outside Diameter (Decimal Inch - 4 Decimals)|Thickness (mm)|5.56Thickness (Inch)|7/32Thickness (Decimal Inch - 4 Decimals)|Standards|Finish Coating|Black OxideFastener Standard|Military Specification|System Of Measurement|MetricAdditional Information|Product Service Code|5306UNSPSC Code|