Value Collection 822811MSC Flange Bolt 5/8-11 Unc 4-1/2 in Grade 8

Product Description

The VALUE COLLECTION 822811MSC is a smooth flange bolt designed for high-strength fastening applications where a built-in flange bearing surface is required. Manufactured from Grade 8 alloy steel with a phosphate and oil finish, this bolt provides corrosion resistance and reliable clamping force in demanding mechanical and structural assemblies. The 5/8-11 UNC thread and 4-1/2-inch length under head make it suited for heavy-duty bolted connections. The partial threading leaves a shank section for shear-load applications. Licensed trades and industrial maintenance professionals install this type of fastener in equipment, structural steel, and machinery mounting work.

This flange bolt is appropriate for use in industrial, commercial, and trade maintenance applications where a smooth flange distributes load across a wider bearing area without the need for a separate washer. The hex drive allows installation with standard 6-point sockets or wrenches. The 1-21/64-inch flange diameter and 1-1/2-inch thread length are typical specifications for medium-to-large fastener assemblies in HVAC equipment mounting, mechanical rooms, and structural connections.

Key Features

• Grade 8 alloy steel construction for high tensile and proof load strength
• Smooth flange eliminates the need for a separate flat washer in most applications
• 5/8-11 UNC partially threaded shank supports shear and tensile loads
• Phosphate and oil finish provides baseline corrosion and galling resistance
• Hex drive compatible with standard sockets and combination wrenches
• Meets IFI 111 and SAE J429 fastener standards

Compatibility

Designed as an OEM-style replacement or maintenance fastener for applications requiring a 5/8-11 UNC smooth flange bolt with a 4-1/2-inch length under head and Grade 8 alloy steel construction.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or licensed trade professional familiar with fastener torque requirements for Grade 8 hardware. Always de-energize and lock out equipment before replacing or tightening fasteners on mechanical assemblies. Use a calibrated torque wrench and follow the torque specification table for 5/8-11 UNC Grade 8 bolts as published by the fastener manufacturer or applicable equipment service manual. Inspect threads and mating surfaces for damage before installation.