Manufacturer Part Number: 42450|Washer Type|Duty Type|Screw Size|M4Material|Spring SteelThread Size|Inside Diameter (mm)|4.10Inside Diameter (Decimal Inch)|Outside Diameter (mm)|7.60Outside Diameter (Decimal Inch - 4 Decimals)|Thickness (mm)|0.90Thickness (Decimal Inch - 4 Decimals)|Hardness|44-51 HRCMaterial Grade|8Military Specification|Does Not Meet Military SpecificationsStandards|Minimum Inside Diameter (Decimal Inch)|Minimum Inside Diameter (mm)|4.10Maximum Inside Diameter (mm)|4.40Minimum Outside Diameter (Decimal Inch)|Minimum Outside Diameter (mm)|Maximum Outside Diameter (mm)|7.60Maximum Outside Diameter (Decimal Inch)|Maximum Thickness (Decimal Inch)|Maximum Thickness (mm)|0.90Fastener Standard|DIN 127Maximum Inside Diameter (Inch)|System Of Measurement|MetricFinish Coating|ZincAdditional Information|UNSPSC Code|31161801