Keyless Bushing Flange Type Not Applicable For Bore Diameter 3 1/4 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 4 23/32 in Overall Width 3.543 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 30 951.568 psi Maximum Transmitted Torque 944 ft-lb Outside Diameter Tolerance +0/-.002 in