Value Collection 825170MSC Serrated Flange Bolt 1/2-13 Unc

Product Description

The VALUE COLLECTION 825170MSC is a serrated flange bolt designed for secure fastening in applications where a built-in flange eliminates the need for a separate washer. Sized at 1/2-13 UNC with a 2-1/2 inch length under head and fully threaded shank, this bolt distributes clamping load across a 1.07-inch serrated flange face. The serrations grip the mating surface to resist loosening under vibration. Manufactured from Grade 5 steel with a zinc-plated finish, it meets ASME B18.6.3 and SAE J429 standards. Installed with a standard hex drive, it is a common choice for mechanical assemblies, equipment mounting, and structural connections in trade and industrial work.

This bolt is suited for use in HVAC equipment assembly, electrical enclosure mounting, mechanical equipment frames, and general industrial fastening where vibration resistance is a priority. The fully threaded design provides maximum thread engagement across the full length, making it effective in thin-material applications or where adjustable clamping depth is needed. Sold in minimum order quantities of 25, this bolt is practical for service technicians and maintenance crews stocking fastener inventory for recurring repair work.

Key Features

• Serrated flange face resists loosening under vibration without a separate washer
• Fully threaded shank for maximum thread engagement along the entire 2-1/2 inch length
• Grade 5 steel construction meets SAE J429 mechanical property requirements
• Zinc-plated finish provides corrosion resistance for indoor and mild-exposure environments
• 1/2-13 UNC thread form is a widely stocked standard thread size
• Hex drive compatible with standard wrenches and impact tools

Compatibility

Designed as a standard 1/2-13 UNC serrated flange bolt conforming to ASME B18.6.3 and SAE J429, suitable for use in any application requiring a Grade 5 fully threaded hex flange bolt in that thread size and length.

Installation Notes

Installation requires a standard hex wrench or socket sized for a 1/2-inch fastener. De-energize and lock out equipment before replacing fasteners on energized assemblies per applicable NFPA 70E or site safety procedures. The serrated flange requires a clean, flat mating surface to engage properly — do not install over paint buildup or debris that would prevent full flange contact. Follow applicable torque guidelines for Grade 5 fasteners in the relevant assembly specification.