Manufacturer Part Number: 42451|Washer Type|Duty Type|Screw Size|M5Material|Spring SteelThread Size|Inside Diameter (mm)|5.10Inside Diameter (Decimal Inch)|Outside Diameter (mm)|9.20Outside Diameter (Decimal Inch - 4 Decimals)|Thickness (mm)|1.20Thickness (Decimal Inch - 4 Decimals)|Hardness|Rockwell C44 to C51Material Grade|8Military Specification|Does Not Meet Military SpecificationsStandards|Minimum Inside Diameter (Decimal Inch)|Minimum Inside Diameter (mm)|5.10Maximum Inside Diameter (mm)|5.40Minimum Outside Diameter (Decimal Inch)|Minimum Outside Diameter (mm)|Maximum Outside Diameter (mm)|9.20Maximum Outside Diameter (Decimal Inch)|Maximum Thickness (Decimal Inch)|Maximum Thickness (mm)|1.20Fastener Standard|DIN 127Maximum Inside Diameter (Inch)|System Of Measurement|MetricFinish Coating|Zinc-PlatedAdditional Information|UNSPSC Code|