Manufacturer Part Number: CD557536|Washer Type|StandardMaterial|SteelMaterial Grade|Screw Size|M20Thread Size|Inside Diameter (Inch)|Inside Diameter (Decimal Inch)|Inside Diameter (mm)|21.00Outside Diameter (mm)|37.00Outside Diameter (Inch)|Outside Diameter (Decimal Inch - 4 Decimals)|Thickness (mm)|3.00Thickness (Inch)|Thickness (Decimal Inch - 4 Decimals)|Standards|Finish Coating|Zinc-PlatedFastener Standard|DIN 125; ISO 7089; 7090Military Specification|System Of Measurement|MetricAdditional Information|Product Service Code|UNSPSC Code|