Designed to bond conduit to steel enclosures, the 1/2 in. EMT Set-Screw Connectors with Insulated Throats (3-Pack) feature nylon insulation and Tri Drive screw heads for use with most screwdrivers. Screw thread retention design to help prevent the screw from vibrating loose. Reversible locknut designed to cut through protective coatings on boxes and enclosures to ensure ground continuity.