Marinco cam lock connectors have a non-conductive retain screw which passes through the metal contact and fastens at both ends to the retaining ring, providing maximum resistance to excessive torque loading. Constructed of solid weatherproof materials, all CLS products are UL listed, CSA listed, NEMA 3R, and NEMA 4 rated for wet locations. All Marinco Series 16 products mate precisely with all other manufacturers’ Series 16 CAM products, including; Leviton, Hubbell, and Crouse-Hinds CAM-Lok CAM Type connectors and Panel Mount. Should you require CAM Type devices not listed, please call: 800-597-9311