Value Collection 825128MSC Serrated Flange Bolt 3/8-16 Unc

Product Description

The VALUE COLLECTION 825128MSC is a serrated flange bolt designed for secure, vibration-resistant fastening in structural and mechanical assemblies. The integrated serrated flange distributes load across a wider surface area and bites into the mating material to resist loosening under dynamic loads — eliminating the need for a separate washer in most applications. Built to Grade 5 steel with a zinc-plated finish for corrosion resistance, this bolt carries a 3/8-16 UNC thread profile and is fully threaded along its 2-1/2-inch length under head. Conforms to ASME B18.6.3 and SAE J429 standards.

This bolt is suited for general industrial, mechanical, and structural applications where a hex-drive, flange-style fastener is specified. The fully threaded shank provides maximum thread engagement across the full grip length, making it a practical choice for through-bolting thin materials or assemblies where nut engagement depth varies. Installers in HVAC, electrical, plumbing, and general fabrication trades will find this fastener appropriate for panel mounting, bracket attachment, and equipment anchorage tasks requiring a 3/8-inch fastener with integrated flange bearing surface.

Key Features

• Serrated flange resists loosening under vibration without a separate lock washer
• Fully threaded shank for maximum thread engagement along the entire 2-1/2-inch length
• Grade 5 steel construction meets SAE J429 mechanical property requirements
• Zinc-plated finish provides baseline corrosion protection
• Hex drive compatible with standard 9/16-inch wrenches and sockets
• Conforms to ASME B18.6.3 dimensional standards

Compatibility

Designed as a standard 3/8-16 UNC serrated flange bolt for use in any application specifying a Grade 5, fully threaded hex flange fastener to ASME B18.6.3 or SAE J429.

Installation Notes

Install using a 9/16-inch hex wrench or socket driver. Ensure mating surfaces are clean and free of debris so the serrated flange seats fully and grips effectively. Power down or de-energize any equipment before fastening components in electrical or mechanical enclosures. Follow applicable torque guidelines from the equipment manufacturer or relevant industry standards for 3/8-16 Grade 5 fasteners.