Manufacturer Part Number: 40B42|Sprocket Type|Plain BoreChain Pitch (Decimal Inch)|0.5000Chain Pitch (Inch)|1/2Iso Number|Pitch Diameter (Decimal Inch)|Pitch Diameter (mm)|Hub Diameter (mm)|Hub Diameter (Decimal Inch)|Chain Trade Size|40Outside Diameter (mm)|Outside Diameter (Decimal Inch - 4 Decimals)|6.9700Keyway 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)|2-3/8Bushing Number|Minimum Bore Diameter (Inch)|3/4Idler Size|Minimum Bore Diameter (Decimal Inch)|Thickness (Decimal Inch - 4 Decimals)|Minimum Bore Diameter (mm)|19.05Maximum Bore Diameter (Decimal Inch)|Maximum Bore Diameter (mm)|Number Of Teeth|42Product Service Code|3020UNSPSC Code|