Value Collection 822697MSC Flange Bolt 5/16-18 Unc 2in Grade 8

Product Description

The VALUE COLLECTION 822697MSC is a smooth flange bolt designed for high-strength fastening applications where a built-in load-distributing flange eliminates the need for a separate washer. Manufactured from Grade 8 alloy steel with a phosphate and oil finish for corrosion resistance, this bolt features a 5/16-18 UNC thread and a 2-inch length under head. The partial thread design — with 7/8 inch of threaded engagement — provides a stronger grip in shear-loaded joints. It is used in mechanical assemblies, equipment mounting, and structural connections by millwrights, maintenance technicians, and general contractors.

This bolt is suited for industrial and commercial fastening applications requiring a SAE J429-compliant Grade 8 fastener. The smooth flange face seats flush against mating surfaces without marring, making it appropriate for equipment panels, machinery frames, and metal-to-metal assemblies where high clamp load and reliable torque retention are required. The 11/16-inch flange diameter provides a wider bearing surface than a standard hex head bolt of the same thread size.

Key Features

• Grade 8 alloy steel construction meets SAE J429 mechanical property requirements for high-strength bolted joints
• Smooth flange face distributes clamping load without a separate washer
• 5/16-18 UNC thread form for compatibility with standard inch-series tapped holes and nuts
• Partial threading — 7/8 inch thread length — provides shear strength in the unthreaded shank zone
• Phosphate and oil finish provides baseline corrosion and galling resistance
• Hex drive for use with standard box-end wrenches and sockets

Compatibility

Designed as an OEM-style replacement or service fastener for any application requiring a 5/16-18 UNC partially threaded smooth flange bolt meeting SAE J429 Grade 8 specifications.

Installation Notes

Install using a standard 1/2-inch drive or hand-ratchet socket set rated for hex fasteners. Ensure mating tapped holes or nuts are clean, free of debris, and compatible with 5/16-18 UNC thread form before installation. Apply torque values per the assembly engineering specification or applicable industry standard for Grade 8 fasteners — do not exceed rated torque. Inspect flange seating surface for flatness to ensure proper load distribution.