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The VALUE COLLECTION MP39642 is a 3/4-16 hex lock nut with a nylon insert, manufactured from Grade C steel. The nylon insert collar grips the bolt thread to resist loosening caused by vibration or torque load, providing a secure, reliable fastening connection. Standing 7/8 inches high with a width across flats ranging from 1.052 to 1.064 inches, this nut conforms to standard inch-measurement dimensions for straightforward fitment with matching hardware. It is suited for mechanical assembly, HVAC equipment mounting, plumbing brackets, and general trade installation work where vibration-resistant fastening is required.
This hex lock nut is a practical choice for residential and light commercial applications where standard 3/4-16 UNF threaded fasteners are used. Typical installation scenarios include equipment frames, pipe hangers, mounting brackets, and structural assemblies in HVAC, plumbing, and general mechanical systems. The nylon insert eliminates the need for separate thread-locking compounds in many standard applications, simplifying the fastening process on the job site.
Designed as a standard replacement or stocking hex lock nut for any application requiring a 3/4-16 UNF nylon-insert lock nut in Grade C steel.
Installation is performed with a standard open-end or box wrench sized to the 1.052 to 1.064 inch width across flats. De-energize or shut off all associated equipment before servicing fasteners on mechanical systems. Do not reuse nylon-insert lock nuts where the insert shows wear or deformation, as the locking performance may be compromised. Fastener installation should comply with applicable mechanical and structural codes for the given application.
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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