Manufacturer Part Number: 33563|Washer Type|Duty Type|Screw Size|7/16 inMaterial|SteelThread Size|Inside Diameter (mm)|Inside Diameter (Decimal Inch)|Outside Diameter (mm)|Outside Diameter (Decimal Inch - 4 Decimals)|Thickness (mm)|Thickness (Decimal Inch - 4 Decimals)|0.1330Hardness|Material Grade|5Military Specification|Does Not Meet Military SpecificationsStandards|Minimum Inside Diameter (Decimal Inch)|0.4400Minimum Inside Diameter (mm)|0.44Maximum Inside Diameter (mm)|Minimum Outside Diameter (Decimal Inch)|Minimum Outside Diameter (mm)|Maximum Outside Diameter (mm)|0.78Maximum Outside Diameter (Decimal Inch)|0.7840Maximum Thickness (Decimal Inch)|Maximum Thickness (mm)|Fastener Standard|Maximum Inside Diameter (Inch)|0.4500System Of Measurement|InchFinish Coating|UncoatedAdditional Information|UNSPSC Code|