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The GREENLEE hn12 is a 1/2-13 zinc plated hex nut used to secure threaded fastener assemblies in a wide range of mechanical and structural applications. The zinc plating provides corrosion resistance suitable for general indoor and light-duty outdoor use. At 0.75 inches across flats and 0.45 inches in height, this nut meets standard imperial dimensions for 1/2-13 UNC thread engagement. It is commonly installed by electricians, plumbers, HVAC technicians, and general contractors wherever threaded rod, bolts, or machine screws require a mating nut.
This hex nut is suited for use in light commercial and residential installations involving conduit hangers, strut assemblies, pipe supports, equipment mounting, and similar fastener applications. Its standard 1/2-13 UNC thread pattern makes it compatible with widely available threaded hardware across multiple trades. The zinc plated finish helps resist surface oxidation in typical indoor mechanical room and utility space environments.
Designed for use with standard 1/2-13 UNC threaded rods, bolts, and machine screws in imperial fastener assemblies typical of HVAC, plumbing, electrical, and general mechanical applications.
Install using a standard 3/4-inch hex wrench or socket driver. De-energize and isolate any associated electrical or mechanical systems before performing fastener work on live equipment. Follow applicable NEC, IPC, or IFGC requirements for support spacing and fastener specifications in your trade application. Do not overtighten, as this can strip threads or distort mating hardware.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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