Value Collection 1-N-43F Hex Lock Nut 7/16-20 Stainless Steel

Product Description

The VALUE COLLECTION 1-N-43F is a nylon insert hex lock nut designed to maintain thread engagement under vibration and dynamic load conditions. Manufactured from 18-8 stainless steel with a bright, uncoated finish, this fastener delivers corrosion resistance suited for plumbing, HVAC, and general mechanical assemblies. The nylon insert deforms around the mating thread to create a prevailing-torque locking action without requiring additional locking hardware. It is sized for a 7/16-20 UNF right-hand thread and measures 29/64 inches in height with a 5/8-inch width across flats. Installers working in corrosive or moisture-prone environments will find the stainless steel grade appropriate for long-term service life.

This hex lock nut is suited for residential and light commercial mechanical applications where vibration resistance and corrosion protection are required. Typical installations include HVAC equipment mounting hardware, plumbing fixture connections, pool equipment assemblies, and general trade fastening tasks where standard hex nuts are inadequate. The UNF thread form matches 7/16-20 threaded rod, bolts, and studs commonly found across HVAC, plumbing, and electrical enclosure hardware. The single-use nylon insert design is intended for initial assembly; reuse after full removal is not recommended as the insert loses clamping effectiveness.

Key Features

• Nylon insert locking style provides prevailing-torque resistance against vibration loosening
• 18-8 stainless steel construction for corrosion resistance in wet or outdoor environments
• 7/16-20 UNF right-hand thread for broad compatibility with standard inch-series fasteners
• Bright, uncoated finish maintains dimensional accuracy and thread fit
• Height of 29/64 inches and width across flats of 5/8 inches for standard hex tooling
• Width across points of 0.6980 inches for precise socket or wrench selection

Compatibility

Designed for use with 7/16-20 UNF right-hand threaded bolts, studs, and threaded rod in inch-measurement fastener applications across HVAC, plumbing, pool, and general mechanical assemblies.

Installation Notes

This fastener is installed by licensed tradespeople and mechanical technicians using standard hex wrenches or sockets sized for a 5/8-inch across-flats dimension. De-energize and isolate equipment before replacing fasteners on any live mechanical or electrical assembly. The nylon insert is a single-use locking element and should not be reinstalled after full removal from the mating thread. Thread engagement and torque requirements should conform to applicable mechanical codes and equipment manufacturer guidelines.