Value Collection 825120MSC Serrated Flange Bolt 3/8-16 Unc

Product Description

The VALUE COLLECTION 825120MSC is a serrated flange bolt designed for secure mechanical fastening in applications where a built-in washer face and vibration resistance are required. The serrated flange distributes clamp load across a wider bearing surface while the serrations bite into the mating material to resist loosening. Sized at 3/8-16 UNC with a 1-1/2 inch length under head and fully threaded shank, this bolt is manufactured from Grade 5 steel with a zinc-plated finish for basic corrosion protection. Tradespeople and maintenance mechanics reach for this fastener when assembling brackets, equipment frames, and structural components that see vibration or periodic disassembly.

This bolt is suited for general mechanical and structural assembly work in commercial and industrial settings. The 3/8-16 UNC thread is one of the most common inch-series thread sizes, making it a staple in equipment maintenance, HVAC unit mounting, electrical enclosure assembly, and plumbing fixture brackets. The fully threaded shank provides maximum thread engagement across the full grip length, which is useful when clamping thin or variable-thickness materials. Installers working to ASME B18.6.3 and SAE J429 standards will find this bolt compliant with those specifications.

Key Features

• Serrated flange face resists loosening under vibration without a separate lock washer
• Fully threaded 3/8-16 UNC shank for maximum thread engagement across the full 1-1/2 inch length under head
• Grade 5 steel construction meets SAE J429 minimum tensile requirements for medium-strength fasteners
• Zinc-plated finish provides baseline corrosion resistance for indoor and protected outdoor use
• 0.81 inch flange diameter distributes bearing load over a wider surface area
• Hex drive compatible with standard 9/16 inch wrenches and sockets
• Compliant with ASME B18.6.3 and SAE J429 dimensional and strength standards

Compatibility

Designed as a standard inch-series serrated flange fastener suitable for use in any application requiring a 3/8-16 UNC hex flange bolt with a 1-1/2 inch length under head and fully threaded shank.

Installation Notes

Installation is performed with a 9/16 inch open-end, box, or socket wrench. De-energize and lock out any equipment before fastener service on live assemblies. Apply torque per the applicable equipment manufacturer specification for Grade 5 hardware at this thread size; do not over-torque, as flange serrations can damage soft or coated mating surfaces if excessive force is applied. Inspect the mating thread for damage or contamination before installation.