Steel nut, coated and uncoated. Zinc-plated steel nut, CRL+3 coated steel nut, nickel-plated steel nut, oxide-coated steel nut, used in connections with steel bolts. Used in cable duct assembly, 1-meter stud, 1-meter threaded rod, 2-meter stud, 2-meter threaded rod assemblies, in the automotive sector, the toy sector, T-slot bolt assembly, etc.