Abstract: A structure for connecting together separate elongated small diameter sonar arrays and nonacoustic modules includes a pair of cylindrical housings which telescope together with a keyway to prevent radial movement and each of which includes means for anchoring a plurality of strength members in the form of ropes of aramid fiber. The outside one of the two telescoping housings includes external threads and an external groove for retaining a seal. The inside cylindrical housing includes two external seals, one of which is in contact with the other housing, and an external groove and shoulder. A sleeve member surrounds the telescoping housing members and includes an internal surface in contact with the other two seals, internal threads engaged with the external threads, and a shallow internal groove carrying a radially expanding retaining ring which, in operation, wedges into the shoulder and against the sleeve to transfer the load from housing to housing.