Value Collection 825342MSC Serrated Flange Bolt 5/16-18 Unc

Product Description

The VALUE COLLECTION 825342MSC is a serrated flange bolt designed for applications requiring a secure, vibration-resistant fastening solution. Manufactured from Grade 8 steel with a zinc-plated finish, this bolt provides high tensile strength and corrosion resistance. The integrated serrated flange distributes clamping load across a wider surface area and bites into the mating material to resist loosening under vibration. The 5/16-18 UNC thread pattern runs fully along the 1/2-inch length under head, with a flange diameter of 0.68 inches. This fastener is installed by maintenance technicians, millwrights, equipment assemblers, and trade professionals working with structural or mechanical assemblies.

This bolt is suited for mechanical assemblies, equipment frames, brackets, and structural connections where a flanged fastener replaces the need for a separate washer. The serrated bearing surface makes it a practical choice in high-vibration environments such as HVAC equipment mounting, electrical panel brackets, plumbing fixture framing, and light industrial machinery. The 5/16-18 UNC thread standard is widely used in inch-system assemblies across residential and commercial trade applications.

Key Features

• Grade 8 steel construction delivers high tensile and proof load strength
• Serrated flange eliminates the need for a separate lock washer and resists vibration loosening
• Zinc-plated finish provides corrosion resistance for indoor and light-duty outdoor applications
• Fully threaded shank along the 1/2-inch length under head maximizes thread engagement
• Flange diameter of 0.68 inches spreads clamping force over a wider bearing area
• Meets ASME B18.6.3 and SAE J429 standards for dimensional and mechanical compliance

Compatibility

Designed as a standard inch-series serrated flange bolt for use in any assembly requiring a 5/16-18 UNC threaded fastener with an integrated flanged bearing surface.

Installation Notes

Install with a standard hex driver or wrench sized for the hex head. Ensure mating threads are clean and free of debris before installation. Power down or de-energize any equipment before accessing fastener locations on live assemblies. Follow applicable equipment manufacturer torque guidelines and relevant industry standards for the specific application.