L.H. DOTTIE RC3 Coupling Nut 1/2''-13 Steel Zinc 50 PK

1/2''-13 Zinc-Plated Coupling Nuts

These 50-piece coupling nuts suit maintenance crews and fabricators who need to join threaded rod or extend studs on the job site. The coarse 13 threads per inch match standard UNC hardware so the nuts thread on quickly with common tools. Zinc plating adds a layer of corrosion resistance for indoor and sheltered outdoor assemblies.

Bulk pack reduces reorder frequency

The 50-count box keeps a ready supply at the bench or in the service truck so technicians avoid mid-job trips to the supply house. Manufacturer-direct shipment on qualifying orders means the stock arrives in original packaging without extra handling. Having the full quantity on hand speeds repetitive coupling tasks across multiple workstations.

1-1/4 inch length sets the engagement window

Each nut provides a fixed 1-1/4 inch thread depth that determines how much rod or stud can be joined in a single connection. Builders who need longer engagement must select a different coupling nut length. The dimension is fixed by the RC3 specification and cannot be altered in the field.