Value Collection 318420BR Heavy Hex Nut 1-1/2-6 Unc Grade 2

Product Description

The VALUE COLLECTION 318420BR is a heavy hex nut threaded to a 1-1/2-6 UNC specification in Grade 2 steel with a bright uncoated finish. Heavy hex nuts carry a wider, thicker profile than standard hex nuts, distributing clamping load across a larger bearing surface. This makes them a common choice in structural, industrial, and mechanical assemblies where fastener integrity under sustained load is required. The right-hand thread engages standard 1-1/2-6 UNC threaded rod, bolts, and studs. Licensed tradespeople including millwrights, pipefitters, ironworkers, and general contractors install these in both new construction and maintenance applications.

This nut is suited for use in heavy structural connections, equipment mounting, flange assemblies, and general industrial fastening where a coarse-thread, large-diameter nut is required. The Grade 2 material designation indicates low to medium carbon steel, appropriate for non-critical structural and mechanical applications where high-strength alloy hardware is not specified. The bright uncoated finish is standard for interior or protected environments. No additional plating or coating is applied, so installations in corrosive or outdoor environments may require supplemental protection or a different finish grade.

Key Features

• Heavy hex profile with 2-3/8 inch width across flats for increased bearing surface
• 1-1/2-6 UNC right-hand thread for compatibility with standard coarse-thread fastener systems
• Grade 2 steel construction for general-purpose structural and mechanical use
• Bright uncoated finish — no plating or surface treatment applied
• Height of 1.4688 inches provides substantial thread engagement depth
• Does not meet military specifications — intended for commercial and industrial applications

Compatibility

Designed for use with 1-1/2-6 UNC threaded fasteners including bolts, studs, and threaded rod in general industrial, structural, and mechanical assembly applications.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with fastener torque requirements for the applicable assembly and material. Always verify thread engagement depth and ensure mating fastener thread specification matches 1-1/2-6 UNC before tightening. Use appropriate wrenches sized for a 2-3/8 inch across-flats dimension. For outdoor or corrosive environments, evaluate whether an uncoated finish is appropriate for the service condition before installation.