Value Collection HHNI2137G-001BX Heavy Hex Nut 1-3/8-6

Product Description

The VALUE COLLECTION HHNI2137G-001BX is a heavy hex nut machined from Grade 2 steel with a hot-dipped galvanized finish for corrosion resistance. It carries a 1-3/8-6 UNC thread size with right-hand thread direction. The wider, thicker profile of a heavy hex nut provides greater bearing surface compared to standard hex nuts, making it suited for structural and heavy-load fastening applications. At 1.02 pounds per unit, this is a substantial fastener intended for demanding installations in industrial, construction, and utility settings. Licensed tradespeople and construction crews working with heavy structural connections will find it a direct fit for code-compliant assemblies.

This heavy hex nut is used in structural steel connections, pipe flange assemblies, equipment mounting, and other high-load fastening scenarios where a standard hex nut does not provide adequate bearing area. The hot-dipped galvanized finish makes it appropriate for exterior, wet, or corrosive environments. It pairs with 1-3/8-6 UNC threaded rod, bolts, or studs and is commonly specified in commercial construction, utility infrastructure, and industrial maintenance work.

Key Features

• Heavy hex profile with 2-3/16 inches across flats for increased bearing surface and wrench engagement
• 1-3/8-6 UNC right-hand thread for compatibility with standard inch-series fastener systems
• Grade 2 steel construction provides reliable mechanical strength for general structural use
• Hot-dipped galvanized finish delivers corrosion protection in outdoor and high-moisture environments
• Height of 1-11/32 inches meets heavy hex dimensional standards for structural applications

Compatibility

Designed for use with 1-3/8-6 UNC threaded fasteners including bolts, studs, and threaded rod in structural, industrial, and construction applications requiring a heavy hex pattern.

Installation Notes

Installation is typically performed by ironworkers, millwrights, pipefitters, or maintenance technicians using appropriate hex wrenches or impact sockets rated for the fastener size. Follow applicable torque guidelines from the fastener manufacturer or relevant structural specifications such as AISC or ASTM standards. Inspect threads for damage before installation and ensure mating threads are clean and free of debris. Do not use impact tools at excessive speed on galvanized fasteners, as this can damage the protective coating.