Value Collection 12NR Serrated Flange Nut 12-24 Zinc Grade 2

Product Description

The VALUE COLLECTION 12NR is a serrated flange nut in a 12-24 thread size, manufactured from Grade 2 steel with a zinc-plated finish. The integrated serrated flange distributes clamping load across a wider bearing surface and bites into the mating material to resist loosening under vibration. The flange diameter measures 0.594 inches, flange height is 0.236 inches, and hardness is rated at 78-90 HR15N. This fastener is sized for use with number 12 machine screws on a 24 threads-per-inch unified coarse pitch. Electricians, HVAC technicians, and mechanical contractors commonly install these nuts when securing panels, brackets, and equipment frames where a standard hex nut would require a separate lock washer.

This serrated flange nut is suited for light to medium-duty fastening applications in residential and commercial trade work. Typical uses include securing electrical enclosures, HVAC cabinet panels, control board mounting brackets, and sheet metal assemblies. The zinc-plated finish provides baseline corrosion resistance for indoor and sheltered installations. The width across flats ranges from 0.428 inches minimum to 0.438 inches maximum, fitting standard 7/16-inch drive sockets and wrenches.

Key Features

• Serrated flange design resists loosening under vibration without a separate lock washer
• Grade 2 steel construction rated at 78-90 HR15N hardness
• Zinc-plated finish for corrosion resistance in sheltered indoor applications
• 12-24 unified coarse thread for compatibility with standard number 12 machine screws
• Flange diameter of 0.594 inches provides an enlarged bearing surface for load distribution
• Inch measurement system; fits standard 7/16-inch drive tooling

Compatibility

Designed as an OEM-style replacement or general-use serrated flange nut for any application requiring a 12-24 threaded fastener with an integrated serrated flange in inch sizing.

Installation Notes

Installation requires a 7/16-inch socket or open-end wrench. Power down and de-energize any electrical equipment before fastening or removing hardware on live panels or enclosures, per applicable NEC requirements. The serrated flange must seat flush and squarely against the mating surface for the serrations to engage properly. Do not reuse a serrated flange nut that shows deformed serrations, as locking performance may be compromised.