Value Collection 314600BR Heavy Hex Nut 1-3/4-8 A194 2H

Product Description

The VALUE COLLECTION 314600BR is a heavy hex nut designed for high-strength bolted assemblies in structural, industrial, and pressure-vessel applications. Made from A194 Grade 2H steel with a bright, uncoated finish, this nut meets ASME B1.1 and ASME B18.2.2 standards. The 1-3/4-8 thread size and 2B fit class provide reliable engagement on heavy-duty fastener systems. Hardness is rated between 95 HRB and 35 HRC, making it suitable for high-load and high-temperature service conditions. Maintenance crews, pipefitters, millwrights, and structural ironworkers commonly install this type of heavy hex nut during equipment assembly, flange connections, and structural bolting work.

This heavy hex nut is used in industrial piping, pressure vessel fabrication, structural steel connections, and heavy mechanical assemblies. The A194 Grade 2H designation makes it a common choice for bolted flange joints and heat exchanger connections where elevated temperature and pressure performance are required. The uncoated finish suits applications where a subsequent coating or galvanizing will be applied in the field, or where bare steel is acceptable per engineering specifications.

Key Features

• A194 Grade 2H steel construction rated for high-strength, high-temperature service
• 1-3/4-8 right-hand thread with 2B fit class for standard heavy hex fastener compatibility
• 2-3/4 inch width across flats for use with standard heavy hex tooling
• Height of 1-23/32 inches provides full thread engagement depth
• Meets ASME B1.1 and ASME B18.2.2 dimensional and thread standards
• Hardness range of 95 HRB to 35 HRC suitable for demanding load conditions

Compatibility

Designed as an OEM-style heavy hex nut for use with 1-3/4-8 UN-threaded fasteners in structural and industrial bolted joint applications conforming to ASME B18.2.2.

Installation Notes

Installation is typically performed by pipefitters, millwrights, or structural ironworkers using calibrated torque wrenches or hydraulic tensioning equipment sized for 1-3/4-inch fasteners. De-energize, depressurize, and lock out the system before servicing any bolted joint. Follow applicable ASME, OSHA, or engineering torque specifications provided in the project documentation — do not estimate torque for heavy structural or pressure-retaining joints. Inspect thread condition on both nut and bolt before assembly to ensure proper fit class engagement.