Value Collection 825290PR Hex Lock Nut 1-8 Unc Grade C

Product Description

The VALUE COLLECTION 825290PR is a heavy hex lock nut with a distorted thread locking style, designed to resist loosening under vibration and dynamic loads. Sized for a 1-8 UNC thread, this nut measures 7/8 inches in height and 1-1/2 inches across the flats, making it suitable for large-fastener structural and mechanical assemblies. It is manufactured from Grade C steel with a clear cadmium finish that provides corrosion resistance in demanding service environments. Installers working in HVAC equipment mounting, piping support, electrical enclosure assembly, and general mechanical trade applications will find this nut sized for robust, high-load connections.

This hex lock nut is used in applications where standard hex nuts are prone to backing off due to vibration or thermal cycling. Typical installations include equipment base frames, conduit support hardware, ductwork hanging systems, pump and blower mounts, and structural fastening where a prevailing-torque locking solution is required. The right-hand thread direction is standard for UNC fastener systems, and the distorted-thread locking feature eliminates the need for separate lock washers in most configurations.

Key Features

• Distorted thread locking style provides prevailing torque without additional hardware
• 1-8 UNC thread size suits large-diameter structural and mechanical fastening
• Grade C steel construction for strength in heavy-load applications
• Clear cadmium finish offers corrosion resistance in service environments
• Right-hand thread direction compatible with standard UNC bolt and stud hardware
• 7/8-inch height and 1-1/2-inch width across flats for standard hex wrench fitment

Compatibility

Designed for use with 1-8 UNC threaded bolts, studs, and rod in inch-measurement fastener systems. Compatible with standard hex wrench and socket tooling sized for 1-1/2 inches across the flats.

Installation Notes

Installation is performed by mechanical, HVAC, plumbing, and electrical tradespeople during equipment mounting and structural fastening tasks. De-energize and lock out all equipment before working in fastener locations on energized assemblies. Use a calibrated torque wrench and follow the equipment manufacturer's torque specifications for the fastener grade and size. Do not mix inch-series and metric hardware in the same fastener assembly.