Value Collection HHNI2H137G-001BX Hex Nut 1-3/8-6 Unc

Product Description

The VALUE COLLECTION HHNI2H137G-001BX is a heavy hex nut rated to ASTM A194 Grade 2H, designed for high-strength bolted assemblies in structural, mechanical, and industrial applications. It carries a 1-3/8-6 UNC thread profile with a right-hand thread direction and measures 2.1875 inches across the flats and 1-11/32 inches in height. The hot-dipped galvanized finish delivers corrosion resistance suited for outdoor, wet, or chemically active environments. At 1.02 pounds per unit, this is a substantial fastener intended for heavy structural connections. Plumbers, pipefitters, ironworkers, and general contractors rely on this grade of nut for pressure flange assemblies, structural steel connections, and heavy equipment anchoring.

This hex nut is appropriate for use in residential and commercial construction, industrial piping systems, and structural steel framing where high-clamp-load fasteners are required. The A194 Grade 2H designation makes it a common choice for pressure vessel and piping flange bolting per ASME B16.5 and related standards. The hot-dipped galvanized coating extends service life in outdoor and corrosive settings, including utility infrastructure, bridge work, and marine-adjacent installations. It is sold individually and is compatible with standard 1-3/8-6 UNC threaded rod or bolts.

Key Features

• ASTM A194 Grade 2H steel construction for high-strength, high-temperature bolting service
• 1-3/8-6 UNC right-hand thread for use with standard coarse-thread fastener systems
• Hot-dipped galvanized finish for corrosion resistance in outdoor and industrial environments
• 2.1875 inches across flats and 1-11/32 inches tall — standard heavy hex geometry
• Weight of 1.02 pounds per unit, consistent with heavy hex nut sizing at this thread diameter

Compatibility

Designed for use with 1-3/8-6 UNC threaded fasteners including heavy hex bolts and threaded rod conforming to the UNC thread standard. Suitable for ASME and ASTM-compliant bolting assemblies requiring A194 Grade 2H nuts.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with torque and tension requirements for structural or pressure-rated bolted joints. Always degrease or inspect threads before assembly to ensure proper engagement. Consult applicable codes such as AISC standards for structural steel or ASME B31 for piping systems when determining final torque procedures. Use the appropriate hand or impact wrench sized for a 2-3/16-inch hex nut to avoid damaging the flats or galvanized coating.