Value Collection 34278 Hex Lock Nut 3/4-10 Grade 2 Steel

Product Description

The VALUE COLLECTION 34278 is a 3/4-10 UNC hex lock nut with a nylon insert locking mechanism, manufactured from Grade 2 steel with a zinc-plated finish. The nylon insert creates interference with the mating thread, resisting loosening from vibration and torque without damaging the fastener or mating part. Standing 7/8 inches high with a 1-1/16 inch width across flats, this nut seats with a standard hex wrench or socket. It is installed by maintenance technicians, millwrights, pipefitters, and general contractors wherever a reliable, reusable prevailing-torque locking fastener is required.

This nut is suited for general mechanical assemblies, structural connections, and equipment mounting applications where vibration resistance is needed. The right-hand thread direction follows standard UNC fastener convention, making it compatible with common 3/4-10 threaded rod, bolts, and studs found in HVAC equipment frames, pump skids, piping supports, and light structural fabrication. The zinc-plated finish provides basic corrosion resistance for indoor and sheltered outdoor environments.

Key Features

• Nylon insert locking style resists loosening under vibration without thread damage
• 3/4-10 UNC right-hand thread for compatibility with standard inch-series fasteners
• Grade 2 steel construction for general-purpose mechanical assemblies
• Zinc-plated finish provides corrosion resistance in typical indoor environments
• Width across flats of 1-1/16 inches fits standard hex sockets and wrenches
• 7/8 inch height provides adequate thread engagement for secure locking

Compatibility

Designed as a standard UNC inch-series hex lock nut for use with any 3/4-10 threaded fastener conforming to UNC thread standards.

Installation Notes

Installation requires a standard 1-1/16 inch hex socket or open-end wrench. Power down or de-energize any equipment before servicing fastened assemblies. The nylon insert is rated for a limited number of reuse cycles — inspect the insert for wear before reuse in critical applications. Torque to the value specified by the equipment manufacturer or applicable structural standard for Grade 2 fasteners.