Value Collection 3744MWW Serrated Flange Bolt 3/8-16 Unc

Product Description

The VALUE COLLECTION 3744MWW is a fully threaded serrated flange bolt designed for secure mechanical fastening in structural and assembly applications. Built from AISI C1022 Grade 2 steel with a zinc-plated finish, this bolt measures 2-3/4 inches in length under the head and carries a 3/8-16 UNC thread. The integrated serrated flange distributes clamping load across a wider bearing surface and bites into the mating material to resist loosening under vibration. It is driven with a standard hex wrench or socket. Trade professionals, maintenance crews, and fabricators use this type of fastener across a wide range of equipment assembly and repair tasks.

This serrated flange bolt is suited for general-purpose fastening in HVAC equipment panels, electrical enclosures, structural brackets, and mechanical assemblies where vibration resistance is a priority. The fully threaded shank allows engagement along the entire bolt length, making it useful in thin-material applications or wherever maximum thread engagement is needed. The zinc plating provides moderate corrosion resistance for indoor and light-duty outdoor environments.

Key Features

• 3/8-16 UNC fully threaded shank — 2-3/4 inches length under head
• Serrated flange resists loosening under vibration without a separate lock washer
• Flange diameter 0.771 to 0.793 inches for broad clamping load distribution
• AISI C1022 Grade 2 steel construction for standard-duty fastening
• Zinc-plated finish for moderate corrosion resistance
• Hex drive — compatible with standard hex sockets and wrenches

Compatibility

Designed as a standard 3/8-16 UNC serrated flange bolt suitable for general mechanical assemblies, equipment panels, and structural connections requiring a hex-drive fastener with an integrated locking flange.

Installation Notes

Installation is performed with a hex socket or open-end wrench sized to the bolt head. Ensure the mating surface is clean and free of debris so the serrated flange seats fully and the anti-rotation teeth engage properly. Follow applicable torque guidelines from the equipment manufacturer or relevant standards for Grade 2 fasteners. Always de-energize or de-pressurize any equipment before disassembling fastened joints.