Value Collection 825102MSC Serrated Flange Bolt 5/16-18 Unc

Product Description

The VALUE COLLECTION 825102MSC is a serrated flange bolt designed for secure fastening in structural and mechanical assemblies. It features a 5/16-18 UNC thread with a 2-3/4 inch length under head and is fully threaded from tip to flange. The integrated serrated flange measures 0.68 inches in diameter and bites into the mating surface to resist loosening under vibration without a separate washer. Manufactured from Grade 5 steel with a zinc-plated finish, it meets ASME B18.6.3 and SAE J429 standards. This bolt is driven with a standard hex wrench or socket. Installers in HVAC, plumbing, electrical, and general mechanical trades use this fastener wherever a washer-face and anti-vibration grip are needed in a single component.

This serrated flange bolt is suited for residential and light commercial applications where vibration resistance is a priority. Common installation scenarios include equipment mounting, bracket attachment, sheet metal assemblies, and mechanical enclosures. The fully threaded shank provides consistent clamping across the full length, making it practical for through-bolting thin materials. It is sold individually with a minimum order quantity of 50 units per order.

Key Features

• Serrated flange face locks against mating surface to resist vibration loosening
• Fully threaded 5/16-18 UNC shank over the full 2-3/4 inch length under head
• 0.68 inch flange diameter distributes clamping load without a separate washer
• Grade 5 steel construction meets SAE J429 mechanical requirements
• Zinc-plated finish provides basic corrosion resistance for indoor and sheltered applications
• Hex drive compatible with standard sockets and wrenches

Compatibility

Designed as a standard UNC serrated flange bolt for use in any application requiring a 5/16-18 thread. Fits standard 5/16 inch clearance holes and mates with any 5/16-18 UNC threaded hole or nut.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson using an appropriately sized hex socket or wrench. Ensure the mating surface is clean and flat so the serrated flange seats fully and engages evenly. De-energize or shut down any equipment before fastener replacement or maintenance. Do not reuse fasteners that show thread damage, deformation of the flange serrations, or corrosion that compromises the zinc coating.