Value Collection 314690BR Heavy Hex Nut 2-4-1/2 Unc

Product Description

The VALUE COLLECTION 314690BR is a heavy hex nut manufactured from A194 Grade 2H steel with a bright, uncoated finish. It is designed for 2-4-1/2 UNC (Unified National Coarse) thread applications with a 2B thread fit class and right-hand thread direction. This nut measures 3.125 inches across the flats and 1.969 inches in height. It conforms to ASME B1.1 and ASME B18.2.2 fastener standards. Licensed trades and industrial maintenance professionals use this hardware in heavy-duty structural, pressure vessel, and piping bolted connections where high-strength fastener assemblies are required.

This heavy hex nut is suited for use in industrial, commercial, and infrastructure applications that demand high-load fastener performance. The A194 Grade 2H designation indicates a carbon or alloy steel heavy hex nut intended for use with high-strength bolts in pressure piping, structural steel, and flanged joint assemblies. The wider hex profile compared to a standard hex nut provides greater bearing surface and wrench engagement, making it appropriate for critical bolted connections in mechanical and process piping systems.

Key Features

• A194 Grade 2H steel construction rated for high-strength bolting applications
• Heavy hex profile with 3.125 inches across flats for increased bearing surface and torque capacity
• Right-hand thread, 2-4-1/2 UNC thread size with 2B fit class per ASME B1.1
• Bright uncoated finish suitable for use as-received or for subsequent coating
• Hardness range of 95 HRB to 35 HRC for consistent clamp load performance
• Conforms to ASME B18.2.2 dimensional standard

Compatibility

Designed as a heavy hex nut for use with 2-4-1/2 UNC threaded fasteners in structural, pressure vessel, and industrial piping bolted assemblies conforming to ASME B18.2.2 requirements.

Installation Notes

Installation should be performed by a qualified millwright, pipefitter, or structural iron worker following applicable codes such as ASME, AISC, or ANSI piping standards. De-energize, depressurize, and isolate any system before servicing bolted connections. Use calibrated torque tools appropriate for large-diameter fasteners to achieve specified clamp load. Do not mix thread standards or fit classes when assembling fasteners.