Bowmalloy BOWMP36155 Hex Head Cap Screw 5/8-11 X 3-1/2 in

Product Description

The BOWMALLOY BOWMP36155 is a Grade 9 steel hex head cap screw sized at 5/8-11 thread and 3-1/2 inches under the head. It features partial threading and a Bowma-Guard protective finish designed to resist corrosion in demanding service environments. Grade 9 fasteners meet higher tensile strength requirements than standard Grade 5 or Grade 8 hardware, making them a common choice in heavy-duty structural, agricultural, and industrial assemblies where joint integrity under dynamic load is critical. Installation is straightforward for any mechanic or millwright familiar with inch-series fasteners.

This cap screw is suited for use in heavy equipment, agricultural machinery, industrial fabrications, and structural steel applications that require high-strength inch-series fasteners. The 5/8-11 coarse thread size and 3-1/2-inch length under head make it applicable to medium-to-thick material stacks. The Bowma-Guard finish provides added corrosion resistance compared to a plain or zinc-plated surface, extending service life in outdoor and high-humidity environments. It ships in a package quantity of 10 units.

Key Features

• Grade 9 steel construction for elevated tensile and proof-load ratings versus Grade 5 and Grade 8
• 5/8-11 coarse inch-series thread for broad tooling compatibility
• 3-1/2 inches length under head accommodates medium-to-thick material stacks
• Partial threading provides a shank section for shear load applications
• Bowma-Guard finish for enhanced corrosion resistance over plain or standard zinc
• Packaged in quantities of 10 for convenient jobsite use

Compatibility

Designed as a high-strength replacement or new-installation hex head cap screw for any application requiring a 5/8-11 x 3-1/2 inch inch-series fastener with Grade 9 minimum material specification.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or technician familiar with high-strength fastener torque procedures. Always consult the applicable engineering specification or OEM service manual for required clamp-load and torque values before installation. Use a calibrated torque wrench and the correct 15/16-inch hex socket or wrench. Inspect threads and mating surfaces for damage or contamination prior to assembly.