Coupling / Components Required Hub-1 (Hub) Only - No Oth PrtsExtended Storage Packaging NoHub-1 Bore Type Straight Finished BoreHub-1 Nominal Bore/Shaft Inch 0.87500Hub-1 Bore Tolerance Clearance AGMA 9002Hub-1 Bore Diameter Min Inch 0.87500Hub-1 Bore Diameter Max Inch 0.87600Hub-1 Keyway W X D 3/16X3/32Hub-1 Keyway Width 0.18750Hub-1 Keyway Depth 0.09375Hub-1 Keyway Radii 0.000000Hub-1 Quantity of Setscrews One setscrewHub-2 Bore Tolerance Clearance AGMA 9002Hub-1 Is a Stock Bore Hub Hub-1 is a Stock Bore Hub