National Mfg N179-663 Steel Threaded Rod 1-8x72

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N179-663 is a 1 inch-8 UNC x 72 inch steel threaded rod built for hanging, connecting, clamping, and supporting loads in demanding interior applications. Rated to a safe working load of 12,000 lbs and manufactured to ASTM A307 Grade A standards, this rod delivers the structural reliability that plumbing, HVAC, and electrical trades require. The coarse UNC thread pattern resists cross-threading and speeds installation when paired with standard hex nuts and couplings. The full 72-inch length allows field cutting to exact dimensions as the job demands.

This threaded rod is suited for interior residential and light commercial installations where hanging and support work is required. Common applications include pipe hanger assemblies, electrical conduit supports, HVAC duct and equipment mounting, and structural clamping in mechanical rooms. Because it can be drilled, cut, heated, or shaped in the field, it adapts to a wide range of fastening scenarios without requiring pre-fabricated lengths. It ships as a single 72-inch rod ready for immediate use.

Key Features

• Safe working load of 12,000 lbs for heavy-duty hanging and support tasks
• Meets ASTM A307 Grade A specification for carbon steel externally threaded fasteners
• 1 inch-8 UNC coarse thread for fast engagement with standard hardware
• 72-inch length can be field-cut, drilled, heated, or shaped to fit the installation
• Suitable for plumbing, HVAC, and electrical support applications
• Interior use designation — not rated for direct outdoor or corrosive exposure

Compatibility

Designed as a standard 1 inch-8 UNC threaded rod compatible with matching UNC hex nuts, coupling nuts, washers, and pipe hanger hardware used in residential and commercial interior mechanical installations.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC mechanics, or electricians depending on the application. Always de-energize electrical systems and isolate any pressurized lines before mounting support hardware nearby. Use appropriate thread lubricant or anti-seize on nut engagement for clamping assemblies that may require future adjustment. Cutting should be performed with a reciprocating saw or hacksaw, and cut ends should be deburred before threading nuts.