Value Collection 406328PS Serrated Flange Bolt 1/2-13 Unc

Product Description

The VALUE COLLECTION 406328PS is a serrated flange bolt designed for general fastening applications where a built-in locking flange eliminates the need for a separate washer. The bolt features a 1/2-13 UNC thread with a 1-3/4 inch length under the head and is fully threaded along its entire shank. Constructed from AISI C1022 Grade 2 steel with a zinc-plated finish, it provides corrosion resistance suitable for indoor and light outdoor use. The serrated flange face bites into the mating surface to resist loosening under vibration. Installed with a standard hex drive, this fastener suits mechanical, HVAC, plumbing, and light structural assembly work.

This bolt is used in residential and commercial applications where a flanged, self-locking fastener is required. Common installation scenarios include equipment mounting, bracket attachment, and panel fastening in HVAC systems, plumbing assemblies, and general mechanical equipment. The fully threaded design maximizes thread engagement across the full grip length, making it well suited for thinner material stacks where partial threading would reduce holding strength. Sold individually with a minimum order quantity of 10 units.

Key Features

• Serrated flange face resists loosening under vibration without a separate lock washer
• Fully threaded shank for maximum thread engagement across the full grip length
• 1/2-13 UNC thread form for broad hardware compatibility
• AISI C1022 Grade 2 steel construction for general-purpose strength
• Zinc-plated finish for corrosion resistance in light-duty environments
• Hex drive head for use with standard wrenches and sockets

Compatibility

Designed as a general-purpose serrated flange bolt for use in any application requiring a 1/2-13 UNC fully threaded fastener with an integrated flanged bearing surface.

Installation Notes

Install using a standard hex wrench or socket driver sized for a 1/2-13 bolt head. Ensure mating threads are clean and free of debris before installation. Do not exceed the torque rating of Grade 2 hardware; consult applicable mechanical or structural fastening standards for the specific application. The serrated flange requires direct contact with the mating surface to function as intended — do not stack additional washers between the flange and the workpiece.