National Mfg N179-424 Zinc Threaded Rod 5/16-18 X 24 in

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N179-424 is a zinc-plated threaded rod measuring 5/16-18 inches in diameter by 24 inches in length, cut with UNC coarse threads along its full length. The zinc finish provides basic corrosion resistance for general-purpose fastening and support applications. With a minimum tensile strength of 6 KSI per ASTM A37 Grade A, this rod is suited for light- to medium-duty hanging, bracing, and anchoring tasks. It can be drilled, cut, heated, or shaped on the job, making it adaptable for custom-length installations or field-modified assemblies. Plumbers, HVAC mechanics, and general tradespeople regularly stock these rods for pipe hangers, duct support, and equipment mounting.

This threaded rod is used in residential and light commercial construction and mechanical system installations. Common applications include pipe hanger assemblies, threaded insert anchoring, equipment support strut systems, and general structural fastening where a fully threaded steel rod is required. Its UNC coarse thread pattern is compatible with standard hex nuts, coupling nuts, and threaded inserts. Sold in a package of 5 rods, it is practical for contractors who need multiple lengths on a single job.

Key Features

• Zinc plating provides corrosion resistance for indoor and sheltered installations
• UNC coarse thread pattern compatible with standard nuts and couplers
• Meets ASTM A37 Grade A with minimum tensile strength of 6 KSI
• Field-workable: can be cut, drilled, heated, or shaped without special tooling
• Full 24-inch length allows field trimming to required dimensions
• Packaged in quantities of 5 for efficient job-site stocking

Compatibility

Designed as a standard 5/16-18 UNC coarse threaded rod for use with compatible hex nuts, coupling nuts, strut channel hardware, and threaded pipe hanger components in general mechanical and construction fastening applications.

Installation Notes

Installation is typically performed by plumbers, HVAC technicians, or general contractors as part of pipe support, duct hanger, or equipment mounting assemblies. Power down or de-energize any adjacent electrical systems before working overhead near live conductors. When cutting to length, use a die or thread chaser to clean the cut end before attaching nuts or couplings. Follow applicable local mechanical codes and manufacturer guidelines for hanger spacing and load ratings.