6item consists of ball, p/n 8887153; plug, p/n 8887154; insert, p/n 8887155; 1.496 in. Spherical dia; the threads are 5/8 - 32uns-2b; 1.520 in. O/a long; assembly must withstand 15 ft lbs min torque after assembly; ball assembly used for ctg 40mm he m406