Value Collection 825068MSC Serrated Flange Bolt 1/4-20 Unc

Product Description

The VALUE COLLECTION 825068MSC is a fully threaded serrated flange bolt designed for secure fastening in mechanical and structural assemblies. The serrated flange acts as an integrated locking washer, biting into the mating surface to resist loosening from vibration and torque. Manufactured from Grade 5 steel with a zinc-plated finish for corrosion resistance, this bolt meets ASME B18.6.3 and SAE J429 standards. Thread size is 1/4-20 UNC with a 2-1/4 inch length under head and a 0.56 inch flange diameter. Installed with a standard hex drive, it is suited for HVAC panels, equipment enclosures, and light structural applications.

This bolt is appropriate for residential and commercial mechanical applications where a vibration-resistant fastener is needed without a separate lock washer. Common install scenarios include securing HVAC sheet metal components, electrical enclosures, motor mounts, and general equipment assembly. The fully threaded shank provides maximum thread engagement across the entire length under head, making it effective in thin-material and through-hole applications. Tradespeople in HVAC, electrical, and general mechanical service will find this fastener compatible with standard 1/4-20 tapped holes and clearance hole layouts.

Key Features

• Serrated flange provides built-in locking action, eliminating the need for a separate lock washer
• Fully threaded shank for maximum thread engagement through the entire 2-1/4 inch length under head
• Grade 5 steel construction meets SAE J429 mechanical requirements
• Zinc-plated finish provides corrosion resistance for indoor and sheltered outdoor use
• Hex drive compatible with standard sockets and wrenches
• Conforms to ASME B18.6.3 dimensional standards

Compatibility

Designed as a standard 1/4-20 UNC inch-series serrated flange bolt suitable for use in any application requiring a 1/4-20 tapped hole or clearance hole per ASME B18.6.3 dimensional standards.

Installation Notes

Installation is performed with a standard hex socket or open-end wrench sized for a 1/4-20 UNC flange bolt. Ensure the mating surface is clean and free of debris so the serrated flange seats fully and provides proper locking engagement. Do not use an additional lock washer with a serrated flange bolt, as stacking locking elements can reduce clamp load consistency. Follow applicable torque guidelines from the relevant equipment manufacturer or industry fastener standards for Grade 5 hardware.