Value Collection HFNI20370-100BX Serrated Flange Nut 3/8-16

Product Description

The VALUE COLLECTION HFNI20370-100BX is a serrated flange nut designed for secure fastening in mechanical, structural, and trade installation applications. Sized at 3/8-16 thread, this nut features an integrated serrated flange that bites into the mating surface to resist loosening under vibration and torque loads. Manufactured from Grade 2 steel with a zinc-plated finish, it provides corrosion resistance suitable for general indoor and light outdoor use. The flange diameter measures 3/4 inches with a flange height of 0.347 inches. This fastener is installed by HVAC technicians, plumbers, electricians, and general contractors wherever vibration-resistant threaded connections are required.

This serrated flange nut is used across a wide range of trade applications including equipment mounting, panel assembly, ductwork support hardware, and mechanical system installations. The 3/8-16 thread size is one of the most common unified coarse thread specifications in North American trade work, making this nut a standard fit for brackets, frames, and mechanical assemblies in both residential and light commercial settings. It is sold in a minimum order quantity of 100 pieces, making it appropriate for stocking or job-lot purchasing.

Key Features

• Serrated flange design grips mating surface to resist loosening under vibration
• 3/8-16 unified coarse thread — one of the most widely used thread sizes in trade work
• Grade 2 steel construction provides reliable strength for general fastening applications
• Zinc-plated finish offers corrosion resistance for indoor and light-duty outdoor use
• Flange diameter of 3/4 inches distributes clamping load over a wider bearing surface
• Sold in quantities of 100 for efficient stocking and job-site use

Compatibility

Designed as a standard 3/8-16 unified coarse thread serrated flange nut compatible with any 3/8-16 threaded fastener application requiring vibration resistance and a flanged bearing surface.

Installation Notes

Install using a wrench or socket sized to the 0.551 to 0.562 inch width across flats. Ensure mating threads are clean and free of debris before assembly. The serrated flange is a single-use locking feature — do not reuse the nut in critical applications once it has been torqued and removed. Follow applicable mechanical and structural codes for the specific system being assembled.