Value Collection HFNI20257-100B 1/4-20 Serrated Flange Nut

Product Description

The VALUE COLLECTION HFNI20257-100B is a 1/4-20 serrated flange nut 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 the nut height ranges from 0.222 to 0.236 inches. This fastener is sold in a minimum order quantity of 100 pieces, making it suitable for production assembly, maintenance stock, and field repair kits across mechanical, HVAC, electrical, and plumbing trades.

Serrated flange nuts in 1/4-20 thread are widely used in light-gauge sheet metal assemblies, equipment panels, junction boxes, and bracket mounting applications where a separate lock washer is not practical. The zinc plating provides baseline corrosion resistance appropriate for indoor and sheltered outdoor environments. Technicians working in HVAC equipment rooms, electrical enclosures, and light structural applications will find this fastener a direct fit for standard 1/4-20 threaded rod, bolts, and machine screws.

Key Features

• Serrated flange integrates locking and load-bearing functions, eliminating the need for a separate lock washer
• 1/4-20 UNC thread size compatible with standard inch-series fastener systems
• Grade 2 steel construction provides adequate strength for general-purpose mechanical assemblies
• Zinc-plated finish offers corrosion resistance for indoor and sheltered applications
• Flange diameter of 0.594 inches distributes clamp load over a wider surface area
• Minimum order quantity of 100 pieces supports production and bulk stocking needs

Compatibility

Designed for use with standard 1/4-20 UNC threaded fasteners in general-purpose mechanical and trade assembly applications.

Installation Notes

Installation should be performed with an appropriately sized wrench sized to the 0.428 to 0.438 inch across-flats dimension; an adjustable wrench or 7/16 inch open-end or socket wrench is typical. Ensure mating threads are clean and free of debris before assembly. Disengage power or isolate any energized systems before installing fasteners inside electrical enclosures or equipment panels. Serrations require firm torque against the mating surface to engage properly — do not install against hardened or coated surfaces that may prevent the serrations from biting.