Value Collection 406238PS Serrated Flange Bolt 3/8-16 Unc

Product Description

The VALUE COLLECTION 406238PS is a fully threaded serrated flange bolt designed for secure mechanical fastening in structural and assembly applications. Sized at 3/8-16 UNC with a 3-inch length under head, this bolt features an integrated serrated flange that bites into the mating surface to resist loosening under vibration. Manufactured from AISI C1022 steel to Grade 2 specification, it carries a zinc-plated finish for basic corrosion resistance. The hex drive allows installation with standard hex tooling. This fastener is used by mechanical assemblers, maintenance technicians, HVAC and equipment installers, and general tradespeople who need a reliable anti-loosening bolt without a separate washer.

This bolt is suited for residential and light commercial assembly work where vibration is a concern and a separate flange washer is not preferred. Common applications include equipment mounting, bracket attachment, HVAC unit assembly, and general structural fastening on steel and similar substrates. The serrated flange bearing surface distributes clamp load across a wider area than a standard hex bolt, reducing the risk of surface damage and improving joint integrity. It is sold individually with a minimum order quantity of 10 pieces.

Key Features

• Serrated flange resists loosening under vibration without a separate lock washer
• Fully threaded 3/8-16 UNC thread along the full 3-inch length under head
• Flange diameter of 0.771 to 0.793 inches provides wider load distribution
• AISI C1022 Grade 2 steel construction for standard-duty fastening applications
• Zinc-plated finish offers basic corrosion protection in dry to mildly humid environments
• Hex drive compatible with standard sockets and wrenches

Compatibility

Designed as a standard-dimension 3/8-16 UNC fully threaded serrated flange bolt suitable for use in any application requiring that thread size, length, and flange style per inch-system fastener standards.

Installation Notes

Install using a standard hex socket or open-end wrench sized for 3/8-inch hex flange bolts. Ensure mating threads are clean and free of debris before installation. Power down or de-energize any equipment before working on fastened assemblies. Do not exceed the torque rating appropriate for Grade 2 steel fasteners in the application per the applicable mechanical or structural code.