Value Collection 122977 Serrated Flange Nut 1/2-13 18-8 Ss

Product Description

The VALUE COLLECTION 122977 is a serrated flange nut in 1/2-13 unified coarse thread, made from 18-8 stainless steel with a bright, uncoated 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 1.031 inches and the overall height is 0.458 inches. This fastener is suited for mechanical assembly, plumbing supports, HVAC equipment mounting, and general structural work where corrosion resistance and vibration resistance are both required. Installation is performed by maintenance technicians, pipefitters, and general tradespeople.

This serrated flange nut is appropriate for use in residential and light commercial applications where a standard hex nut would require a separate lock washer. The serrations eliminate the need for an additional locking element, reducing part count and assembly time. Typical use cases include equipment mounting brackets, strut channel assemblies, pipe hangers, and any bolted joint subject to vibration or thermal cycling where joint integrity must be maintained over time.

Key Features

• Integrated serrated flange eliminates need for a separate lock washer
• 18-8 stainless steel construction provides corrosion resistance in wet or outdoor environments
• Bright uncoated finish is compatible with stainless fastener systems without galvanic mismatch concerns
• 1/2-13 UNC thread size fits standard 1/2-inch bolts and threaded rod
• Flange diameter of 1.031 inches distributes load across a larger bearing surface compared to a standard hex nut
• Width across flats ranges from 0.736 to 0.750 inches, compatible with standard 3/4-inch wrenching tools

Compatibility

Designed as a standard 1/2-13 UNC serrated flange nut suitable for use with any 1/2-inch UNC-threaded bolt, stud, or threaded rod in inch-measurement fastener assemblies.

Installation Notes

Install using a standard 3/4-inch wrench or socket. Ensure mating bolt threads are clean and free of debris before assembly. The serrated face must seat directly against the workpiece or structural member to engage the locking serrations. Do not use with a flat washer between the flange and the mating surface, as this will defeat the anti-loosening function of the serrations.