Jergens 20714 Heavy Hex Nut 1/2-13 Grade 8 Steel

Product Description

The JERGENS 20714 is a heavy hex nut with a 1/2-13 UNC thread size, manufactured from Grade 8 steel with a black oxide finish. Grade 8 steel delivers high tensile strength for demanding fastening applications where standard-grade hardware is insufficient. The black oxide coating provides mild corrosion resistance and reduces light reflection on exposed assemblies. At 3/4 inches across the flats and 7/16 inches in height, this nut conforms to heavy hex dimensional standards. It is used by millwrights, pipefitters, structural ironworkers, and maintenance technicians across industrial and commercial settings.

This heavy hex nut is suited for structural connections, heavy equipment assembly, and high-load bolted joints where Grade 8 tensile strength is required. The right-hand thread engages standard UNC fasteners. It is commonly installed in industrial machinery, steel fabrication, and mechanical assemblies where torque loads exceed the capacity of Grade 2 or Grade 5 hardware. The larger bearing surface of the heavy hex profile distributes clamp load across a wider area compared to standard hex nuts.

Key Features

• Grade 8 steel construction for high-strength fastening applications
• Heavy hex profile provides greater bearing surface than standard hex nuts
• 1/2-13 UNC right-hand thread for compatibility with standard inch-series fasteners
• Black oxide finish for mild corrosion resistance and reduced surface reflectivity
• 3/4 inches across flats with 7/16 inches height for consistent wrench engagement

Compatibility

Designed as an OEM-style replacement or direct-use heavy hex nut for 1/2-13 UNC Grade 8 bolts and threaded rod in industrial and structural fastening applications.

Installation Notes

Installation is performed by millwrights, ironworkers, or maintenance technicians using a standard 3/4-inch wrench or socket. Follow applicable torque specifications from the fastener manufacturer or structural engineer for the specific joint design. Inspect threads for damage before installation and ensure mating bolt threads are clean and free of debris. Do not mix Grade 8 hardware with lower-grade fasteners in the same joint.