Manufacturer Part Number: Z9281|Washer Type|StructuralMaterial|Alloy SteelMaterial Grade|Screw Size|1-1/4Thread Size|Inside Diameter (Inch)|1-3/8Inside Diameter (Decimal Inch)|1.3750Inside Diameter (mm)|Outside Diameter (mm)|Outside Diameter (Inch)|2-1/2Outside Diameter (Decimal Inch - 4 Decimals)|2.5000Thickness (mm)|Thickness (Inch)|1/4Thickness (Decimal Inch - 4 Decimals)|0.2500Standards|Finish Coating|Zinc Yellow DichromateFastener Standard|Military Specification|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|