National Mfg N179-556 Zinc Threaded Rod 3/4-10 X 36 in

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N179-556 is a zinc-plated threaded rod measuring 3/4-10 inches in diameter by 36 inches in length, featuring UNC coarse threads throughout. Designed for use in structural fastening, hanger assemblies, and mechanical support applications, this rod meets ASTM A37 Grade A standards with a minimum tensile strength of 6 KSI. The zinc finish provides basic corrosion resistance for general indoor and moderate-environment use. It is field-workable — it can be drilled, cut, heated, or shaped to suit the install at hand, making it a flexible choice for trade applications across plumbing, HVAC, and electrical rough-in work.

This threaded rod is suited for residential and light commercial installations where a continuous-thread fastener is required for pipe hangers, equipment supports, strut channel assemblies, or anchor bolt applications. The 3/4-10 UNC coarse thread profile is a standard sizing used across a wide range of compatible nuts, couplings, and threaded inserts. Sold in a package quantity of 3, it is well-suited for jobs requiring multiple rods at a consistent length. HVAC installers, plumbers, and electricians routinely use this type of rod when rigging overhead equipment or suspending conduit and ductwork.

Key Features

• UNC coarse thread profile at 3/4-10 for broad hardware compatibility
• Zinc-plated finish for basic corrosion resistance
• Meets ASTM A37 Grade A with minimum tensile strength of 6 KSI
• Field-workable: can be drilled, cut, heated, or shaped on the job
• 36-inch length provides material for custom hanger and support configurations
• Packaged in a quantity of 3 per package

Compatibility

Designed as a standard 3/4-10 UNC coarse-thread rod compatible with corresponding nuts, threaded couplings, beam clamps, and strut fittings used in plumbing, HVAC, and electrical support applications.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or electricians during rough-in or equipment-mounting phases. De-energize any nearby electrical systems and shut off applicable water or gas services before working overhead. Use appropriate cutting tools and thread-chasing dies when trimming or rethreading cut ends. Refer to applicable building codes including IPC, IFGC, and NEC for hanger spacing and support load requirements.