Keyless Bushing Flange Type Flanged For Bore Diameter 2 1/2 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 3 47/64 in Overall Width 1.673 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 28 076.476 psi Maximum Transmitted Torque 181 ft-lb Outside Diameter Tolerance +0/-.002 in