Manufacturer Part Number: 31327|Washer Type|Duty Type|Screw Size|3/8 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)|0.0940Hardness|Material Grade|5Military Specification|Does Not Meet Military SpecificationsStandards|Minimum Inside Diameter (Decimal Inch)|0.3770Minimum Inside Diameter (mm)|0.37Maximum Inside Diameter (mm)|Minimum Outside Diameter (Decimal Inch)|Minimum Outside Diameter (mm)|Maximum Outside Diameter (mm)|0.68Maximum Outside Diameter (Decimal Inch)|0.6800Maximum Thickness (Decimal Inch)|Maximum Thickness (mm)|Fastener Standard|Maximum Inside Diameter (Inch)|0.3850System Of Measurement|InchFinish Coating|Zinc-PlatedAdditional Information|UNSPSC Code|