Value Collection C39046 Flange Bolt 5/8-11 Unc 1-3/4 in

Product Description

The VALUE COLLECTION C39046 is a smooth flange bolt designed for high-load fastening applications where a wide bearing surface is needed without a separate washer. It features a 5/8-11 UNC thread form and measures 1-3/4 inches in length under the head. The integrated smooth flange spreads clamping load across a 1-21/64 inch diameter bearing face. Manufactured from Grade 8 alloy steel, this bolt meets IFI 111 and SAE J429 standards, making it suitable for structural and high-strength mechanical assemblies. The hex drive head accepts standard socket or wrench tooling. The finish is bright and uncoated.

This bolt is used in industrial, mechanical, and structural applications where a one-piece flange fastener simplifies assembly and reduces part count. Partial threading allows for full shank engagement in clearance holes before thread engagement begins, which is common in bolted joints with thick material stacks. Maintenance technicians, millwrights, and general mechanical contractors will find this bolt appropriate for equipment mounting, brackets, frames, and similar structural connections requiring a Grade 8 rated fastener.

Key Features

• 5/8-11 UNC thread form — coarse thread for fast assembly and strong engagement
• 1-3/4 inch length under head with partial threading for clearance-hole applications
• Integrated smooth flange diameter of 1-21/64 inches distributes clamping load without a washer
• Grade 8 alloy steel construction for high-tensile-strength applications
• Bright uncoated finish — suitable for dry or indoor service environments
• Meets IFI 111 and SAE J429 fastener standards

Compatibility

Designed as a standard IFI 111 and SAE J429 compliant smooth flange bolt for use in inch-series bolted assemblies requiring a 5/8-11 UNC Grade 8 partially threaded fastener.

Installation Notes

Installation is performed using a hex socket or open-end wrench sized for the fastener head. Torque the bolt to values appropriate for Grade 8 5/8-11 fasteners as specified by the applicable engineering standard or equipment manufacturer. Ensure mating threads and bearing surfaces are clean and free of debris before assembly. Do not use this uncoated fastener in wet or corrosive environments without appropriate protection.