Value Collection 314450BR Heavy Hex Nut 1-3/8-8

Product Description

The VALUE COLLECTION 314450BR is a heavy hex nut threaded to a 1-3/8-8 UN specification, manufactured from A194 Grade 2H steel with a bright uncoated finish. This nut is designed for high-strength bolted assemblies where consistent clamping force and dimensional reliability are required. The 2H designation indicates a heavy hex geometry with controlled hardness in the 24 to 35 HRC range, making it suitable for structural, pressure vessel, and industrial pipe flange applications. It measures 2-3/16 inches across the flats and 1-11/32 inches in height, conforming to ASME B1.1 and ASME B18.2.2 standards. Mechanical contractors, pipefitters, and structural ironworkers will encounter this nut in heavy bolting scenarios.

This heavy hex nut is used in industrial and commercial applications where high-strength fastening is required, including pressure vessel assemblies, structural steel connections, and large-diameter piping flanges. The right-hand thread direction and 2B thread fit class allow straightforward pairing with standard UN-threaded bolts and studs in the 1-3/8-8 size range. It is sold individually and is appropriate for both new construction and maintenance and repair operations in heavy industrial environments.

Key Features

• A194 Grade 2H steel construction for high-strength, controlled-hardness performance
• Hardness range of 24 to 35 HRC for consistent mechanical properties
• 2-3/16 inches across flats and 1-11/32 inches in height per ASME B18.2.2
• Right-hand thread, 2B fit class, conforming to ASME B1.1 UN thread standard
• Bright uncoated finish suitable for use with standard lubricants or thread compounds
• Individually packaged with no minimum order beyond a single unit

Compatibility

Designed for use with 1-3/8-8 UN-threaded bolts and studs in heavy hex fastening applications conforming to ASME B18.2.2 dimensional standards.

Installation Notes

Installation should be performed by a qualified mechanical contractor, pipefitter, or ironworker familiar with ASME and AISC torque and tensioning requirements for heavy hex fasteners. Always de-energize or depressurize the system before disassembling or replacing fasteners in pressurized or structural assemblies. Apply an appropriate thread lubricant or anti-seize compound per the project specification to achieve accurate clamp load. Do not use impact tools without a controlled torque method, and verify thread engagement meets minimum depth requirements before loading the joint.