Value Collection 825040MSC Serrated Flange Bolt 10-32 Unf

Product Description

The VALUE COLLECTION 825040MSC is a serrated flange bolt designed for secure fastening in applications where vibration resistance and load distribution are required. With a 10-32 UNF thread size and a 1/2-inch length under head, this bolt is fully threaded along its entire shank. The integrated serrated flange eliminates the need for a separate lock washer by biting into the mating surface to resist loosening under dynamic loads. It is manufactured from Grade 5 steel with a zinc-plated finish for corrosion resistance. The hex drive allows installation with standard hex tools. Installers in HVAC, electrical, and light mechanical assembly commonly use this fastener in panel and bracket mounting applications.

This bolt suits residential and commercial applications where a compact, fully threaded fastener with built-in locking action is needed. It is appropriate for metal-to-metal assembly in control panels, electrical enclosures, HVAC equipment frames, and similar light-to-medium duty structural connections. The 10-32 UNF thread standard makes it compatible with pre-tapped UNF holes commonly found in sheet metal and machined components. The 0.454-inch flange diameter provides a broad bearing surface across the clamped material.

Key Features

• 10-32 UNF fully threaded shank provides maximum thread engagement over the entire 1/2-inch length under head
• Serrated flange face bites into mating surface to resist vibration-induced loosening without a separate lock washer
• 0.454-inch flange diameter distributes clamping load across a wider bearing area
• Grade 5 steel construction meets SAE J429 mechanical property requirements
• Zinc-plated finish provides baseline corrosion resistance for indoor and protected environments
• Hex drive compatible with standard hex wrenches and sockets
• Conforms to ASME B18.6.3 dimensional standards for inch-series flange bolts

Compatibility

Designed as an OEM-style replacement or stock fastener for use in any application requiring a 10-32 UNF serrated flange bolt with a 1/2-inch length under head per ASME B18.6.3.

Installation Notes

Installation is performed by hand-threading into a pre-tapped 10-32 UNF hole, then driving to the specified torque with a hex wrench or socket. Power down or de-energize any electrical enclosure or equipment before working inside panels or control boxes. The serrated flange requires direct contact with the mating surface to function as intended — do not install a flat washer between the flange and the clamped material. Follow applicable NEC or equipment manufacturer torque guidelines for electrical enclosure fasteners.