Value Collection 39621 Hex Lock Nut 1/4-20 Grade 8 Steel

Product Description

The VALUE COLLECTION 39621 is a 1/4-20 hex lock nut with a nylon insert locking style, manufactured from Grade 8 steel with a bright, uncoated finish. The nylon insert creates friction against the mating thread to resist loosening under vibration and dynamic loads. At 5/16 inches high and 7/16 inches across the flats, this nut follows standard UNC thread specifications with a right-hand thread direction. It is a general-purpose fastener suited for mechanical assemblies where reliable locking performance is required without chemical threadlockers or secondary locking hardware.

This nut is used in a wide range of industrial and mechanical applications where a reusable, vibration-resistant fastener is needed. Typical install scenarios include equipment frames, panels, brackets, and structural assemblies in HVAC, light manufacturing, and maintenance environments. The nylon insert allows repeated installation and removal while retaining functional locking torque over multiple uses.

Key Features

• Nylon insert locking style resists loosening under vibration without thread damage
• Grade 8 steel construction for high-strength fastening applications
• 1/4-20 UNC right-hand thread for compatibility with standard inch-series hardware
• Bright, uncoated finish suits dry or controlled indoor environments
• Compact 5/16 inch height fits tight assembly clearances

Compatibility

Designed as a standard UNC inch-series hex lock nut for use with 1/4-20 threaded bolts, screws, and studs in mechanical and structural assemblies.

Installation Notes

Installation is performed with a standard 7/16 inch wrench or socket. Power down and de-energize any equipment before fastener service on electrical enclosures or live assemblies. Do not exceed the torque capacity appropriate for Grade 8 steel fasteners of this thread size, and consult applicable mechanical standards for torque specifications. Nylon insert nuts are intended for use at temperatures within the rated range of the nylon insert material.