Value Collection R52001117 Serrated Flange Bolt 5/16-18

Product Description

The VALUE COLLECTION R52001117 is a serrated flange bolt designed for secure fastening in applications where standard hex bolts require additional anti-loosening resistance. Manufactured from AISI C1022 Grade 2 steel with a zinc-plated finish, this bolt features a built-in serrated flange that bites into the mating surface to resist vibration-induced loosening without a separate washer. The 5/16-18 UNC thread is fully threaded along the 3/4-inch length under head, providing consistent thread engagement across the full grip range. Tradespeople and maintenance technicians working in light mechanical, HVAC equipment mounting, and general fabrication applications will find this bolt a reliable choice for corrosion-resistant, vibration-resistant fastening.

This serrated flange bolt is suited for light-duty structural and mechanical assembly work in residential and commercial settings. Typical applications include equipment mounting, sheet metal assembly, brackets, and general-purpose fastening where a captive washer effect and anti-loosening serrations are needed. The zinc plating provides moderate corrosion resistance appropriate for indoor or sheltered installations. This bolt is sold individually with a minimum order quantity of 50 units, making it practical for bulk shop stock or job-site kitting.

Key Features

• Serrated flange acts as an integrated washer and lock washer, eliminating the need for separate hardware
• Fully threaded 5/16-18 UNC shank provides maximum thread engagement over the full 3/4-inch length under head
• AISI C1022 Grade 2 steel construction for standard-duty mechanical fastening
• Zinc-plated finish provides moderate corrosion resistance for indoor and sheltered environments
• Flange diameter of 0.686 to 0.706 inches distributes clamping load over a wider bearing surface
• Hex drive compatible with standard sockets and wrenches for quick installation

Compatibility

Designed as a standard 5/16-18 UNC serrated flange bolt suitable for use in general mechanical assemblies, equipment mounting, and fabrication applications requiring an AISI C1022 Grade 2 zinc-plated fastener.

Installation Notes

Installation requires a standard hex socket or wrench sized for a 5/16-inch bolt head. Ensure mating surfaces are clean and free of debris before installation so the serrations seat properly and achieve full locking contact. Do not use with surfaces that cannot tolerate the serration marks left by the flange. Follow applicable torque guidelines for Grade 2 fasteners per ASME or project specifications.