Tire Coupling Hub Angular Misalignment 3 Degrees Coupling Size WE30 Horsepower @ 100 RPM 5.8 hp Maximum Speed 5 800 RPM Bore Type Round For Bushing Size Not Applicable Maximum Torque 3 650 in-lb Keyway Depth Not Applicable Keyway Width Not Applicable Hub Diameter 5.42 in Parallel Misalignment 0.09375 in Bore Diameter 1 in Screw Thread Size 3/8 In.-16 Set Screw Location Inside System of Measurement Inch Torsional Stiffness 42 200 in-lb/rad Length through Bore 2 5/16 in