Bowmalloy 36226 Hex Head Cap Screw Grade 9 Alloy Steel

Product Description

The BOWMALLOY 36226 is a partially threaded hex head cap screw engineered for high-strength bolted connections in demanding industrial and structural applications. It is manufactured from Grade 9 alloy steel, which delivers superior tensile strength compared to standard Grade 5 or Grade 8 fasteners. The screw measures 1-8 thread size with a 6-1/2 inch length under head and carries a zinc-plated clear chromate finish for corrosion resistance. Mechanics, millwrights, and maintenance technicians working on heavy equipment, off-highway machinery, or structural assemblies are the primary installers of this fastener.

This cap screw is suited for heavy-duty bolted joint applications where high clamp load and fatigue resistance are required. Typical use cases include agricultural equipment, construction machinery, hydraulic component mounting, and structural steel fabrication. The partial threading allows the unthreaded shank to bear shear loads, making it appropriate for joints where shear strength is as important as tensile clamping force. Package quantity is 2 pieces per unit.

Key Features

• Grade 9 alloy steel construction for high tensile strength exceeding Grade 8 ratings
• Partially threaded shank supports shear load bearing in bolted joints
• Zinc-plated clear chromate finish provides corrosion resistance in moderate environments
• 1-8 thread size and 6-1/2 inch length under head suit large-diameter structural connections
• Inch measurement system for compatibility with standard SAE tooling

Compatibility

Designed as a high-strength replacement hex head cap screw for inch-series bolted assemblies requiring Grade 9 alloy steel fasteners with a 1-8 thread size and 6-1/2 inch grip length.

Installation Notes

Installation is performed by qualified mechanics, millwrights, or structural assemblers using standard SAE hex sockets or open-end wrenches sized for the 1-8 hex head. Always de-energize or lock out equipment before replacing fasteners in live assemblies. Torque to the fastener manufacturer's published specification for Grade 9 alloy steel at the applicable thread size and lubrication condition. Inspect mating threads for damage before installation and use appropriate thread lubricant or anti-seize as specified by the equipment OEM.