Solar Masthead™ II Cordgrips Heyco Solar Masthead™ II Cordgrips use an integral sealing ring to provide a superior seal at the clearance or threaded mounting hole location, every time. Skinned-over glands offer the flexibility to use from 1 to 31 of the available holes while still providing a liquid-tight seal around the wire. These IP68 NPT hubs are approved for NEMA 4, 4X, 6, and 6P applications. The UV-resistant nylon construction with TPE sealing gland resists salt water, weak acids, gasoline, alcohol, oil, grease, and common solvents. The Masthead II series offers generous wrenching flats for ease of assembly. They are provided with an assembled metal locknut, and no disassembly is required for installation. Heyco Solar Masthead II Cordgrips are designed for solar rooftop or combiner box installations and are suitable for use with USE-2 and PV cables.