Value Collection 1-N-25F Hex Lock Nut 1/4-28 Stainless Steel

Product Description

The VALUE COLLECTION 1-N-25F is a 1/4-28 UNF hex lock nut with a nylon insert locking mechanism, manufactured from 18-8 stainless steel. The nylon insert creates interference with mating threads to resist loosening caused by vibration, torque, and thermal cycling. At 5/16 inches high with a 7/16-inch width across flats, this nut is sized for standard 1/4-28 fine-thread fastener assemblies. The right-hand thread direction follows standard convention. Installers in HVAC, plumbing, electrical, and mechanical service work reach for 18-8 stainless when corrosion resistance matters alongside reliable locking performance.

This lock nut is suited for light-to-medium fastening applications where vibration resistance is required and a permanent locking solution is not. Common uses include equipment panel assemblies, mounting brackets, conduit support hardware, and mechanical components exposed to moisture or mild corrosives. The 1/4-28 fine thread pitch provides higher thread engagement per inch than coarse-thread equivalents, making it a preferred choice where precise clamping force control is needed.

Key Features

• Nylon insert locking style resists loosening under vibration without damaging mating threads
• 18-8 stainless steel construction provides corrosion resistance for wet or outdoor environments
• 1/4-28 UNF fine thread for higher thread engagement and controlled clamping
• Right-hand thread direction, standard convention for most fastener assemblies
• 5/16-inch height and 7/16-inch width across flats fit standard hex tooling

Compatibility

Designed for use with 1/4-28 UNF right-hand threaded fasteners in inch-measurement assemblies requiring a reusable nylon insert lock nut.

Installation Notes

Installation requires a standard hex wrench or socket sized for 7/16-inch flats. Nylon insert lock nuts are reusable but locking torque decreases with each removal and reinstallation cycle — replace when locking resistance is noticeably reduced. Always de-energize electrical equipment and isolate mechanical systems before disassembling fastened components. Follow applicable mechanical and electrical codes for fastener torque requirements specific to the assembly.