Topaz 290UL – 4″ Steel Rigid Locknuts – UL Listed – (25 Pack)

Topaz’s rigid locknuts securely affixes Rigid conduit to an electrical box or other metal enclosure. Rigid locknuts help ensure a secure and safe connection; fabricated from corrosion resistant steel with zinc plated finish; UL approved. Serrated teeth help prevent loosening of the connection due to vibrations. Multiple trade sizes up to 6” available.