Value Collection C39045 Flange Bolt 5/8-11 Unc 1-1/2 in Grade 8

Product Description

The VALUE COLLECTION C39045 is a smooth flange bolt engineered for high-strength fastening applications requiring a wide bearing surface without a separate washer. Sized at 5/8-11 UNC with a 1-1/2 inch length under head and fully threaded shank, this bolt is manufactured from Grade 8 alloy steel, delivering a high tensile strength suitable for heavy-duty structural and mechanical assemblies. The smooth flange measures 1-21/64 inches (1.3281 inches) in diameter, distributing clamp load evenly across the mating surface. The uncoated finish leaves the steel bare, making it appropriate for applications where coating compatibility or post-installation treatment is a consideration. Installation is handled by HVAC, mechanical, or general trade technicians working on equipment frames, brackets, and structural connections.

This flange bolt is suited for use in industrial, commercial, and mechanical assembly environments where a Grade 8 fastener is specified. The fully threaded design provides maximum thread engagement along the entire shank length, making it a practical choice for through-bolted connections, equipment mounting, and structural bracketing. It conforms to IFI 111 and SAE J429 standards, which are commonly called out in mechanical assembly drawings and equipment specifications across HVAC, plumbing, and general trade work.

Key Features

• 5/8-11 UNC thread size with 1-1/2 inch length under head, fully threaded
• Grade 8 alloy steel construction for high tensile and proof load strength
• Smooth flange at 1-21/64 inches diameter eliminates the need for a separate flat washer
• Uncoated finish suitable for applications requiring bare steel or field-applied coatings
• Meets IFI 111 and SAE J429 fastener standards
• Hex drive for standard socket or wrench installation

Compatibility

Designed as a standard UNC hex flange bolt for use in mechanical assemblies, equipment frames, and structural connections specifying a 5/8-11 Grade 8 fastener per IFI 111 or SAE J429.

Installation Notes

Installation is performed by licensed or journeyman-level mechanical, HVAC, or plumbing technicians following applicable equipment specifications and torque requirements as defined by the engineer of record or equipment manufacturer. De-energize and lock out all equipment before working on any bolted connection. Use a calibrated torque wrench to achieve the specified clamp load for Grade 8 fasteners; always refer to the assembly drawing or equipment manual for the required torque value. Inspect threads for damage before installation and verify mating thread condition to ensure proper engagement.