Manufacturer Part Number: 013-9980070-1|Washer Type|RailroadDuty Type|Screw Size|1 inMaterial|Spring 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)|0.6250Hardness|Material Grade|Military Specification|Does Not Meet Military SpecificationsStandards|Minimum Inside Diameter (Decimal Inch)|1.0312Minimum Inside Diameter (mm)|1.03Maximum Inside Diameter (mm)|Minimum Outside Diameter (Decimal Inch)|Minimum Outside Diameter (mm)|Maximum Outside Diameter (mm)|2.09Maximum Outside Diameter (Decimal Inch)|2.0938Maximum Thickness (Decimal Inch)|Maximum Thickness (mm)|Fastener Standard|Maximum Inside Diameter (Inch)|1.0625System Of Measurement|InchFinish Coating|UncoatedAdditional Information|UNSPSC Code|