Value Collection 825330MSC Serrated Flange Bolt 1/4-20 Unc

Product Description

The VALUE COLLECTION 825330MSC is a serrated flange bolt designed for secure fastening in applications where a built-in locking feature is required. The serrated flange distributes clamping load over a wider surface area while the teeth bite into the mating material to resist loosening from vibration. This bolt is manufactured from Grade 8 steel with a zinc-plated finish for corrosion resistance. It carries a 1/4-20 UNC thread and is fully threaded along its 3/4-inch length under head. Typical installers include millwrights, maintenance mechanics, and field service technicians working on mechanical assemblies, brackets, and equipment panels.

This bolt is suited for industrial, commercial, and general mechanical assembly applications where a standard hex-drive serrated flange fastener is specified. The fully threaded shank allows engagement across the full grip range, making it practical for thin-material or short-clamp-length joints. The zinc plating provides a baseline level of corrosion protection for indoor and light-duty outdoor environments. It is sold in multiples of 100 units per order.

Key Features

• Serrated flange provides built-in vibration resistance without a separate lock washer
• Grade 8 steel construction for high tensile and proof load requirements
• Fully threaded shank for maximum thread engagement across the full 3/4-inch length
• Zinc-plated finish for corrosion resistance in general-duty environments
• Hex drive compatible with standard hex sockets and wrenches
• Meets ASME B18.6.3 and SAE J429 standards

Compatibility

Designed as a standard 1/4-20 UNC serrated flange bolt for use in any application calling for a fully threaded Grade 8 hex flange fastener conforming to ASME B18.6.3 and SAE J429.

Installation Notes

Installation should be performed by a qualified mechanic or technician using a calibrated torque wrench sized for the hex drive. De-energize and lock out any equipment before fastening into live assemblies. The serrated flange is intended to seat directly against the workpiece surface — do not use an additional flat washer between the flange and the mating material, as this will defeat the serration locking function. Follow applicable industry torque specifications for Grade 8 fasteners at this thread size.