Value Collection 7-N-25C Hex Lock Nut 1/4-20 Brass

Product Description

The VALUE COLLECTION 7-N-25C is a 1/4-20 UNC hex lock nut with a nylon insert locking mechanism, manufactured from brass with a bright, uncoated finish. The nylon insert compresses against mating threads to resist loosening caused by vibration and torque loads. Standing 5/16 inches high with a 7/16-inch width across flats, this fastener is sized for standard 1/4-20 tooling. Right-hand thread direction follows conventional installation practice. Plumbers, HVAC technicians, electricians, and general mechanical contractors use this style of lock nut wherever brass corrosion resistance and reliable thread locking are required in the same fastener.

This nylon insert lock nut suits light-to-medium fastening applications in residential and commercial mechanical systems. Brass construction makes it appropriate for plumbing, low-voltage electrical panel work, HVAC equipment enclosures, and instrumentation assemblies where steel fasteners risk galvanic corrosion or are otherwise unsuitable. The nylon insert provides a single-use locking function without thread adhesive or secondary locking hardware. Minimum order quantity is 25 pieces per order.

Key Features

• Nylon insert locking style resists loosening under vibration without thread-locking compound
• Brass material offers corrosion resistance in plumbing and HVAC environments
• Bright, uncoated finish — no coating incompatibility with fluid or electrical contact surfaces
• 1/4-20 UNC right-hand thread for compatibility with standard inch-series tooling
• Width across flats of 7/16 inches accepts standard open-end and socket wrenches
• Width across points of 0.482 inches for clearance planning in tight enclosures

Compatibility

Designed as a standard 1/4-20 UNC inch-series hex lock nut for use with any mating 1/4-20 male threaded fastener or stud in brass-compatible assemblies.

Installation Notes

Turn off power or shut off fluid supply to the assembly before servicing any fastened joint. Use a correctly sized 7/16-inch open-end wrench or socket to drive this nut — avoid adjustable tools that can round the hex flats on brass. Nylon insert lock nuts are generally considered single-use; once the insert has been fully engaged and removed, replace the nut rather than reusing it. Follow applicable mechanical codes and equipment manufacturer torque guidance for the assembly being serviced.