Value Collection B52001666 Heavy Hex Lock Nut 1-1/2-6

Product Description

The VALUE COLLECTION B52001666 is a heavy hex lock nut with a nylon insert, designed to maintain a secure threaded connection under vibration and dynamic loading. Built from Grade 2 steel with a zinc-plated finish for corrosion resistance, this nut features a 1-1/2-6 UNC right-hand thread and a nylon insert that grips the mating bolt threads to resist loosening. At 1-59/64 inches tall with a 2-3/8 inch width across flats, it is sized for heavy-duty structural and mechanical fastening applications. Weighing 1.5 pounds, this is a robust fastener suited for industrial, construction, and equipment assembly work.

This heavy hex lock nut is used in general industrial and structural applications where standard hex nuts are insufficient and vibration resistance is required. Typical installations include structural steel connections, machinery mounting, equipment frames, and heavy mechanical assemblies. The nylon insert locking style provides reliable prevailing torque without the need for additional locking hardware such as split washers or thread-locking compounds. It is installed by maintenance technicians, millwrights, ironworkers, and general contractors working with 1-1/2-6 UNC threaded fasteners.

Key Features

• Nylon insert locking style provides vibration-resistant prevailing torque
• Grade 2 steel construction for standard structural fastening duty
• Zinc-plated finish offers moderate corrosion resistance
• 1-1/2-6 UNC right-hand thread in the inch measurement system
• Heavy hex profile with 2-3/8 inch width across flats for increased wrench bearing surface
• Width across points of 2.6220 inches for precise socket and wrench fitment

Compatibility

Designed as an OEM-style replacement or standard heavy hex lock nut for use with 1-1/2-6 UNC right-hand threaded bolts and studs in inch-system fastener applications.

Installation Notes

Installation should be performed by qualified tradespeople familiar with proper fastener torque procedures. Always verify thread engagement and confirm mating fastener grade and thread pitch before installation. Nylon insert lock nuts are generally intended for single-use applications and should not be reused once the nylon insert has been deformed. Follow applicable structural or mechanical codes when specifying fasteners for load-bearing assemblies.