National Mfg N179-325 Zinc Threaded Rod 5/16-18 X 12 in

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N179-325 is a zinc-plated threaded rod designed for general fastening, hanging, and anchoring applications across mechanical, plumbing, and construction trades. Measuring 5/16-18 inches in diameter with a 12-inch length, it features UNC coarse threads throughout the full shaft. The zinc finish provides basic corrosion resistance for indoor and light-duty installations. This rod meets ASTM A37 Grade A standards with a minimum tensile strength of 6 KSI, making it suitable for moderate-load suspension and support work.

This threaded rod is used in residential and light commercial settings wherever an all-thread fastener is required. Common applications include pipe hangers, equipment supports, HVAC duct suspension, electrical conduit supports, and general structural anchoring. The rod can be drilled, cut, heated, and shaped on the job site, giving installers flexibility to fit specific run lengths or configurations without special tooling beyond standard trade shop equipment. Each package contains 5 rods.

Key Features

• UNC coarse thread pattern along the full 12-inch length for broad fastener compatibility
• Zinc plating provides corrosion resistance for indoor and protected environments
• Field-workable: can be drilled, cut, heated, or shaped without special equipment
• Meets ASTM A37 Grade A with a minimum tensile strength of 6 KSI
• Sold in a package of 5 rods for efficient stocking and job-site use

Compatibility

Designed as a standard 5/16-18 UNC all-thread fastener suitable for use with compatible nuts, couplings, pipe hangers, and suspension hardware that accept this thread size and pitch.

Installation Notes

Threaded rod installation is typically performed by plumbers, electricians, HVAC technicians, and general contractors. Shut down any energized or pressurized systems in the work area before installing supporting hardware. Use a thread-compatible nut and washer rated for the intended load. When cutting to length on site, use a die or thread chaser to clean the cut end before assembly.