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 3.543 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 21 116 psi Maximum Transmitted Torque 8 709 ft-lb Outside Diameter Tolerance +0.002 in