Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N179-473 is a zinc-plated threaded rod measuring 3/4-10 inches in diameter by 24 inches in length, featuring UNC coarse threads along its full length. This fastener is designed for general-purpose fastening, hanging, and anchoring applications in mechanical, plumbing, HVAC, and electrical trade work. The zinc coating provides basic corrosion resistance suitable for indoor and light-duty installations. It meets ASTM A37 Grade A standards with a minimum tensile strength of 6 KSI, making it appropriate for moderate-load applications. Each package contains 3 rods, sold as a set.

This threaded rod is used across residential and light commercial installations where a continuous-thread fastener is required. Typical applications include pipe hanger assemblies, equipment support strut systems, duct suspension, and electrical conduit support frameworks. Because the rod can be drilled, cut, heated, and shaped in the field, it adapts readily to custom-length requirements without specialty tooling. Plumbers, HVAC technicians, and electricians commonly use rods of this type when assembling threaded-rod hanger systems with standard coupling nuts, washers, and brackets.

Key Features

UNC coarse thread pattern at 3/4-10 for broad compatibility with standard nuts and couplings
Zinc plating provides corrosion resistance for indoor and dry-location use
Meets ASTM A37 Grade A standard with a minimum tensile strength of 6 KSI
Field-machinable: can be drilled, cut, heated, and shaped on site
Sold in a package of 3 rods per unit of measure

Compatibility

Designed as a standard UNC coarse-thread rod compatible with 3/4-10 coupling nuts, hex nuts, washers, and threaded-rod hanger hardware commonly used in HVAC, plumbing, and electrical support installations.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or electricians following applicable mechanical and building codes. When cutting to length in the field, use a thread-chasing die or file to clean the cut end before threading hardware onto the rod. Ensure the supporting structure and fastening hardware are rated for the intended load before hanging equipment. Zinc-plated rods are suited for dry or semi-protected indoor environments and should not be substituted for stainless or hot-dip galvanized rod in corrosive or exterior wet conditions.