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The VALUE COLLECTION B52001671 is a 3/4-16 UNF hex lock nut with a nylon insert locking mechanism, manufactured from Grade 8 steel with a zinc yellow dichromate finish. The nylon insert creates interference with the mating thread, resisting loosening caused by vibration and torque cycling without damaging the fastener thread. Standing 7/8 inches high with a 1-1/16 inch width across flats, this nut is sized for standard 3/4-inch wrenches and sockets. It is suited for mechanical assemblies, structural connections, and equipment mounting applications where a right-hand threaded 3/4-16 fastener is specified. Weighing 0.12 pounds per unit, it is a compact, high-strength locking fastener for demanding installations.
This hex lock nut is used across industrial, mechanical, and trade applications wherever a high-strength, vibration-resistant fastener is required on a 3/4-16 UNF thread. Typical install scenarios include equipment mounting, drivetrain components, structural brackets, and machinery frames. The Grade 8 steel construction makes it appropriate for high-load applications in HVAC equipment assemblies, mechanical systems, and general trade work. The zinc yellow dichromate finish provides corrosion resistance for use in moderately exposed environments.
Designed as an OEM-style replacement or service fastener for any mechanical assembly specifying a 3/4-16 UNF hex lock nut with nylon insert in Grade 8 steel.
Installation is performed with a standard open-end, box-end, or socket wrench sized for 1-1/16 inch across flats. De-energize and lock out equipment before servicing any fastened assembly. Nylon insert lock nuts are generally intended for single use and should be replaced rather than reused after removal, as the nylon insert may not maintain full locking effectiveness once deformed. Follow applicable mechanical and structural codes for torque requirements specific to the assembly.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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