Value Collection 3108MWW Serrated Flange Bolt 5/16-18 Unc

Product Description

The VALUE COLLECTION 3108MWW is a serrated flange bolt designed for general fastening applications requiring a built-in bearing surface and vibration resistance. The serrated flange distributes clamping load across a wider area while the teeth bite into the mating surface to resist loosening under vibration. The bolt features a 5/16-18 UNC thread, is fully threaded over its 1/2-inch length under head, and is manufactured from AISI C1022 Grade 2 steel with a zinc-plated finish for basic corrosion protection. The hex drive allows installation with standard hand or power tools. Tradespeople and maintenance professionals use this fastener in light-duty structural and mechanical assemblies.

This bolt is suited for residential and commercial applications where a self-locking flange fastener replaces a separate bolt-and-washer combination. Common use cases include HVAC equipment panels, electrical enclosures, light sheet metal assemblies, and general mechanical fixtures where vibration-induced loosening is a concern. The fully threaded shank provides maximum thread engagement in thin materials. The zinc-plated finish offers a baseline level of corrosion resistance appropriate for indoor or sheltered installations.

Key Features

• 5/16-18 UNC thread with 1/2-inch length under head, fully threaded
• Serrated flange with 0.686 to 0.706 inch flange diameter for improved clamp load distribution and vibration resistance
• Hex drive compatible with standard wrenches and sockets
• AISI C1022 Grade 2 steel construction
• Zinc-plated finish for basic corrosion protection in indoor or sheltered environments
• Fully threaded shank maximizes thread engagement in thin or shallow workpieces

Compatibility

Designed as an OEM-style and general-use replacement serrated flange bolt for any application requiring a 5/16-18 UNC fully threaded flange fastener in Grade 2 steel.

Installation Notes

Install using a standard hex wrench or socket driver sized for a 5/16-inch hex drive fastener. Ensure mating threads are clean and free of debris before installation. Power down or de-energize any equipment before accessing fastened panels or enclosures. Do not exceed the torque capacity appropriate for Grade 2 steel fasteners of this thread size as specified in applicable mechanical codes or equipment service documentation.