Manufacturer Part Number: 50B21F-1H|Sprocket Type|Finished BoreChain Pitch (Decimal Inch)|0.6250Chain Pitch (Inch)|5/8Iso Number|Pitch Diameter (Decimal Inch)|Pitch Diameter (mm)|Hub Diameter (mm)|Hub Diameter (Decimal Inch)|3.00000Chain Trade Size|50Outside Diameter (mm)|Outside Diameter (Decimal Inch - 4 Decimals)|4.5200Keyway Width|Keyway Width (Inch)|Keyway Width (Decimal Inch)|Keyway Width (mm)|Keyway Depth (mm)|Keyway Depth (Fractional Inch)|Keyway Depth (Decimal Inch)|Material|Bushing Series|Standards|Maximum Bore Diameter (Inch)|Bushing Number|Minimum Bore Diameter (Inch)|1-1/2Idler Size|Minimum Bore Diameter (Decimal Inch)|Thickness (Decimal Inch - 4 Decimals)|Minimum Bore Diameter (mm)|Maximum Bore Diameter (Decimal Inch)|Maximum Bore Diameter (mm)|Number Of Teeth|21Product Service Code|3020UNSPSC Code|