Value Collection 406020PR Serrated Flange Bolt 1/4-20 Unc

Product Description

The VALUE COLLECTION 406020PR is a serrated flange bolt designed for secure mechanical fastening in a wide range of structural and assembly applications. This bolt features a 1/4-20 UNC thread at 3/4 inch length under head, fully threaded along its entire shank. The integrated serrated flange distributes clamping load across a wider bearing surface and bites into the mating material to resist loosening under vibration. Manufactured from AISI C1022 steel to Grade 2 specification and finished with zinc plating for corrosion resistance, this bolt is suited for general-purpose use in light industrial, mechanical, and maintenance applications. Licensed tradespeople and maintenance technicians working with sheet metal enclosures, equipment panels, or structural brackets will find this fastener a reliable standard choice.

This serrated flange bolt is used in applications where vibration resistance and a built-in washer surface are needed without a separate flange washer or lock washer. Common install scenarios include HVAC cabinet assembly, electrical enclosure mounting, equipment frames, and general mechanical assembly work where 1/4-20 UNC threading is specified. The fully threaded shank allows engagement across the full fastened thickness, making it suitable for thinner material joints. These bolts are sold with a minimum order quantity of 100 units per order and ship as a single package quantity.

Key Features

• Serrated flange face bites into mating surface to resist loosening under vibration without a separate lock washer
• Fully threaded shank provides complete thread engagement across the full grip length
• 1/4-20 UNC thread form for compatibility with standard inch-series tapped holes and nuts
• Grade 2 AISI C1022 steel construction meets general-purpose structural fastening requirements
• Zinc plating provides basic corrosion resistance for indoor and light-duty outdoor use
• Hex drive head allows installation with standard hex wrenches or socket drivers

Compatibility

Designed as a general-purpose replacement or stock fastener for any application requiring a 1/4-20 UNC serrated flange bolt with 3/4 inch length under head and fully threaded shank.

Installation Notes

Installation is performed with a standard hex wrench or socket driver sized to the hex head. Ensure the mating tapped hole or nut is clean and free of debris before threading to avoid cross-threading. Do not overtighten beyond the torque rating appropriate for Grade 2 fasteners at this thread size, as specified by the applicable engineering or maintenance documentation. Zinc-plated fasteners are intended for dry or mildly humid environments and should not be used in contact with dissimilar metals in corrosive conditions without appropriate isolation.