Value Collection MP93625 Hex Lock Nut 5/16-18 Ss

Product Description

The VALUE COLLECTION MP93625 is a 5/16-18 UNC hex lock nut with a nylon insert locking mechanism, manufactured from grade 18-8 stainless steel. The nylon insert creates interference with the mating thread, resisting loosening from vibration and torque without the need for thread-locking compounds. At 23/64 inches high with a 1/2-inch width across flats, this nut fits standard hex tooling and installs quickly in both new assembly and maintenance applications. It is suited for use in plumbing, HVAC, pool equipment, and general mechanical assemblies where corrosion resistance and reliable thread retention are required.

This nut is used in light to medium-duty fastening applications where stainless steel corrosion resistance is needed alongside positive thread locking. Typical installations include outdoor and wet-environment equipment panels, pump and motor mounting hardware, pool and spa equipment frames, and HVAC bracket assemblies. The right-hand thread direction follows standard UNC fastener conventions, making it compatible with the full range of 5/16-18 UNC bolts, studs, and threaded rod.

Key Features

• Nylon insert locking style resists loosening under vibration without adhesives or secondary locking hardware
• Grade 18-8 stainless steel construction provides corrosion resistance in wet and outdoor environments
• 5/16-18 UNC thread size with right-hand thread direction for compatibility with standard fasteners
• 23/64 inches height and 1/2 inch width across flats fits standard hex wrenches and sockets
• Inch measurement system, UNC fastener standard

Compatibility

Designed as a standard UNC replacement or assembly hex lock nut compatible with 5/16-18 threaded bolts, cap screws, and threaded rod following UNC inch-series fastener standards.

Installation Notes

Installation requires a standard 1/2-inch hex wrench or socket. Power down and de-energize any equipment before replacing fasteners in electrical or mechanical assemblies. The nylon insert is single-use by design and should not be reused once the nut has been torqued and removed, as the insert loses its locking effectiveness after the first installation cycle. Follow applicable mechanical and equipment manufacturer torque guidelines for the specific joint being assembled.