Keyless Bushing Flange Type Not Applicable For Bore Diameter 3 15/16 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 5 45/64 in Overall Width 4.016 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 20 688 psi Maximum Transmitted Torque 10 039 ft-lb