Value Collection HFNFIX037-100BX Serrated Flange Nut 3/8-24

Product Description

The VALUE COLLECTION HFNFIX037-100BX is a serrated flange nut machined 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 without a separate lock washer. Thread size is 3/8-24 unified fine. The flange diameter is 3/4 inch (maximum 0.750 inches) with a flange height of 0.347 inches. Overall nut height ranges from 0.330 inches minimum to 0.347 inches maximum. Width across flats runs 0.551 inches minimum to 0.562 inches maximum. Installers in mechanical, HVAC, plumbing, and electrical trades reach for this fastener wherever corrosion resistance and vibration resistance are both required.

This serrated flange nut suits assemblies that see moisture, mild chemical exposure, or continuous vibration — common conditions in HVAC equipment mounting, electrical enclosure hardware, plumbing fixture tie-downs, and light structural connections. The 3/8-24 fine thread pitch provides higher thread engagement per inch compared to coarse thread, making it a preferred choice when joint integrity is critical in thin-wall or high-cycle applications. It is sold individually with a minimum order quantity of 5 units.

Key Features

• Serrated flange locks against loosening under vibration without a separate lock washer
• 18-8 stainless steel construction resists corrosion in wet and mildly corrosive environments
• Bright uncoated finish — no coating thickness to account for in tight tolerance assemblies
• 3/8-24 fine thread for higher clamp load retention in critical joints
• Integrated flange spreads bearing load to protect softer mating surfaces
• Inch measurement system — compatible with standard SAE tooling

Compatibility

Designed as a standard 3/8-24 unified fine thread serrated flange nut for use in any inch-system assembly requiring an 18-8 stainless steel fastener with an integrated locking flange.

Installation Notes

Install using a standard 9/16-inch wrench or socket matching the 0.551 to 0.562 inch across-flats dimension. Ensure mating threads are clean and free of debris before seating. The serrated flange is designed for a single installation cycle — once the serrations embed into the mating surface, reuse is not recommended as locking effectiveness is reduced. Torque to the fastener manufacturer or assembly specification for 3/8-24 stainless hardware.