Keyless Bushing Flange Type Not Applicable For Bore Diameter 2 1/2 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 3 47/64 in Overall Width 1.26 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 35 405.794 psi Maximum Transmitted Torque 228 ft-lb Outside Diameter Tolerance +0/-.002 in