Manufacturer Part Number: 39728|Washer Type|Duty Type|Screw Size|7/16 inMaterial|Alloy 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)|0.1090Hardness|Material Grade|AISI 4037Military 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)|0.77Maximum Outside Diameter (Decimal Inch)|0.7760Maximum Thickness (Decimal Inch)|Maximum Thickness (mm)|Fastener Standard|Maximum Inside Diameter (Inch)|0.4500System Of Measurement|InchFinish Coating|Zinc Yellow DichromateAdditional Information|UNSPSC Code|