Value Collection 47151 Flange Bolt 5/8-11 Unc 2-1/2 in Grade 8

Product Description

The VALUE COLLECTION 47151 is a smooth flange bolt designed for high-strength fastening applications in mechanical, industrial, and trade service work. It features a 5/8-11 UNC thread with a 2-1/2 inch length under head and is partially threaded, making it suitable for clamping applications where the shank must pass through clearance holes before engaging the threaded section. Built from Grade 8 alloy steel, it delivers high tensile strength for demanding assemblies. The integrated smooth flange distributes clamping load over a wider bearing surface, eliminating the need for a separate washer in many installations. A zinc yellow dichromate finish provides corrosion resistance in general service environments.

This flange bolt is used in heavy-duty mechanical assemblies, equipment mounting, and structural fastening applications across HVAC, plumbing, electrical, and general trade service. The partial threading and large flange diameter of 1-21/64 inches (1.3281 inches decimal) suit it for applications requiring controlled clamp load and positive seating against flanged or flat surfaces. Minimum order quantity is 25 pieces, making it appropriate for shop stock or field service kits where Grade 8 strength is a consistent requirement.

Key Features

• 5/8-11 UNC thread for compatibility with standard inch-series tapped holes and hex nuts
• Grade 8 alloy steel construction for high tensile and proof load ratings
• Partial threading preserves shank strength and accommodates clearance-hole pass-through
• Smooth flange diameter of 1-21/64 inches distributes bearing load without a separate washer
• Zinc yellow dichromate finish for corrosion resistance in general indoor and sheltered outdoor use
• Meets IFI 111 and SAE J429 fastener standards

Compatibility

Designed as a standard inch-series smooth flange bolt for use with 5/8-11 UNC tapped holes or matching hex nuts in Grade 8 alloy steel assemblies across mechanical and trade applications.

Installation Notes

Installation is performed with a standard hex drive tool sized for the bolt head. Confirm the tapped hole or mating nut is rated for Grade 8 fasteners before torquing. Follow applicable torque specifications from the equipment manufacturer or relevant standards for 5/8-11 UNC Grade 8 hardware. Do not mix Grade 8 bolts with lower-grade nuts or threaded inserts, as this can compromise joint integrity.