Lovejoy 69790441307 Steel HercuFlex FX Series 41307 FX 3.5EM Hub, Rigid, 2-1/2" Bore, 6.87" OD, 4.19" Length Through Bore, 5/8" x 5/16" Keyway, 203500 Inch Pounds Item Torque

                The Hercuflex coupling has increased nominal torque, larger maximum bore size and longer service life. It is interchangeable with standard AGMA flange interface.