Manufacturer Part Number: 38890|Washer Type|StandardMaterial|CopperMaterial Grade|Screw Size|Thread Size|Inside Diameter (Inch)|Inside Diameter (Decimal Inch)|0.2031Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|1/2Outside Diameter (Decimal Inch - 4 Decimals)|Thickness (mm)|Thickness (Inch)|Thickness (Decimal Inch - 4 Decimals)|Standards|Finish Coating|PlainFastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|31161807