Keyless Bushing Flange Type Flanged For Bore Diameter 3 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 4 23/32 in Overall Width 1.988 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 28 450.432 psi Maximum Transmitted Torque 317 ft-lb Outside Diameter Tolerance +0/-.002 in