Value Collection 1428MWW Serrated Flange Bolt 1/4-20 Unc

Product Description

The VALUE COLLECTION 1428MWW is a serrated flange bolt designed for general-purpose fastening applications requiring a built-in bearing surface and vibration resistance. Sized at 1/4-20 UNC with a 1-3/4 inch length under head and fully threaded shank, this bolt is manufactured from AISI C1022 Grade 2 steel with a zinc-plated finish for corrosion protection. The serrated flange distributes clamping load across a wider area while the teeth grip the mating surface to resist loosening under vibration. It is installed using a standard hex drive and suits maintenance, fabrication, and mechanical assembly work across trade and industrial environments.

This fastener is appropriate for light to medium duty assemblies in residential and commercial maintenance, HVAC equipment mounting, electrical enclosure work, and general mechanical fabrication. The fully threaded shank allows engagement along the entire bolt length, making it well suited for thin-material clamping or short-depth tapped hole applications. Installers working in environments subject to vibration will find the serrated flange particularly useful for maintaining clamp load without secondary locking hardware.

Key Features

• 1/4-20 UNC thread size with fully threaded shank for maximum engagement flexibility
• Serrated flange bears against the mating surface and resists loosening under vibration
• Flange diameter of 0.513 to 0.531 inches distributes clamping load over a wider footprint
• AISI C1022 Grade 2 steel construction provides reliable strength for general-purpose use
• Zinc-plated finish offers corrosion resistance in typical indoor and mild-exposure environments
• Hex drive compatible with standard wrenches and sockets for fast installation

Compatibility

Designed as a general-purpose 1/4-20 UNC serrated flange bolt suitable for standard tapped holes and through-hole assemblies requiring a 1-3/4 inch length under head in inch-standard fastener applications.

Installation Notes

Installation is performed using a standard hex wrench or socket driver sized for 1/4-20 fasteners. Ensure the mating surface is clean and free of debris so the serrated flange teeth can seat properly and provide the intended locking action. Do not use the serrated flange as a substitute for a hardened load-bearing washer in high-stress structural joints. Follow applicable mechanical codes and equipment manufacturer torque guidelines for the specific assembly.