Keyless Bushing Flange Type Not Applicable For Bore Diameter 2 3/4 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 4 21/64 in Overall Width 1.496 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 37 331.29 psi Maximum Transmitted Torque 349 ft-lb Outside Diameter Tolerance +0/-.002 in