Value Collection 305277PS Hex Jam Lock Nut 1/4-20 Grade 2

Product Description

The VALUE COLLECTION 305277PS is a 1/4-20 hex jam lock nut with a nylon insert locking mechanism, manufactured from Grade 2 steel with a zinc finish. This low-profile fastener is designed to resist loosening under vibration and torque by using an interference fit between the nylon insert and the mating thread. At 21/64 inches in height and 3/4 inches across the flats, it is a standard jam-profile fastener suited for applications where stack height is a concern. Right-hand thread direction conforms to UNF fastener standards. Commonly installed by maintenance technicians, electricians, plumbers, and mechanical contractors wherever a reliable, low-profile locking nut is required.

This nut is appropriate for general-purpose fastening applications in residential and light commercial mechanical, electrical, and plumbing assemblies. The nylon insert provides a prevailing-torque locking action that does not rely on deforming the metal thread, allowing the nut to be removed and reused in non-critical applications. The jam profile makes it a practical choice wherever space between mating surfaces is limited or where a secondary locking nut is needed against a primary fastener.

Key Features

• Nylon insert locking style resists loosening from vibration without damaging the mating thread
• Grade 2 steel construction suitable for general-purpose, non-structural fastening applications
• Zinc finish provides basic corrosion resistance for indoor and light-duty environments
• Low-profile jam height of 21/64 inches reduces stack height in confined spaces
• Right-hand 1/4-20 UNF thread for compatibility with standard fractional fastener systems
• 3/4-inch width across flats fits standard 3/4-inch open-end or box wrenches

Compatibility

Designed for use with 1/4-20 UNF right-hand threaded bolts, studs, and rods in general mechanical, electrical, and plumbing assembly applications.

Installation Notes

Installation is performed by hand-threading onto a compatible 1/4-20 fastener, then tightening with a standard open-end, box, or combination wrench sized for a 3/4-inch hex. Power down or de-energize any associated equipment before working on fastened assemblies in electrical or mechanical systems. Do not exceed the design load limits of Grade 2 steel in structural or high-stress applications.