Value Collection MSC-67481127 Heavy Hex Nut 7/8-9 Unc

Product Description

The VALUE COLLECTION MSC-67481127 is a heavy hex nut in a 7/8-9 UNC thread configuration, manufactured from steel with a right-hand thread direction and a 2B class of fit. Compared to standard hex nuts, the heavy hex profile provides a larger across-flats dimension and greater height, delivering increased bearing surface and clamping force. At 1-7/16 inches across the flats and 55/64 inches high, this nut is well suited for high-load fastening applications where a standard hex nut would not provide adequate strength or contact area. The uncoated finish is typical for applications where a coating is applied after assembly or where bare steel is acceptable.

This heavy hex nut is used in structural, industrial, and mechanical assembly applications requiring a robust threaded fastener on 7/8-9 UNC threaded rod, bolt, or stud. Common install scenarios include structural steel connections, heavy equipment assembly, pipeline flanges, and general industrial fabrication. Millwrights, ironworkers, pipefitters, and maintenance mechanics are the primary trades that specify and install heavy hex nuts of this type. The 2B thread fit class indicates a standard commercial tolerance suitable for most industrial applications.

Key Features

• 7/8-9 UNC thread size with right-hand thread direction
• Heavy hex profile: 1-7/16 inches across flats, 55/64 inches high
• 2B class of fit for standard commercial thread tolerance
• Steel construction for strength in load-bearing fastener applications
• Uncoated finish — compatible with post-assembly coating or bare-steel use

Compatibility

Designed as a replacement or standard-stock heavy hex nut for 7/8-9 UNC threaded fasteners in industrial, structural, and mechanical assembly applications.

Installation Notes

Installation is performed by the applicable trade using standard open-end, box-end, or impact wrenches sized for 1-7/16 inches across flats. Torque requirements are determined by the engineer of record or applicable structural code — do not assume a torque value without consulting the project specification. Ensure mating threads are clean and free of debris before installation. Where galvanic corrosion is a concern, verify material compatibility between the nut and the fastener it engages.