Bowmalloy 36224 Hex Head Cap Screw Grade 9 Alloy Steel

Product Description

The BOWMALLOY 36224 is a partially threaded hex head cap screw engineered for high-strength fastening applications in industrial, construction, and mechanical assembly environments. It measures 1-8 thread size by 5-1/2 inches in length under the head. Manufactured from Grade 9 alloy steel, this fastener delivers exceptional tensile strength over standard Grade 5 and Grade 8 hardware. The clear zinc chromate finish provides corrosion resistance suitable for general-purpose service conditions. Typically installed by millwrights, ironworkers, maintenance mechanics, and structural assembly technicians who require a reliable, high-load fastener in critical joint connections.

This hex head cap screw is suited for heavy-duty structural and mechanical fastening tasks where high clamping force and vibration resistance are required. Its partial threading allows for a smooth shank in the grip length, making it appropriate for joints that carry shear loads. Common applications include agricultural equipment, heavy machinery, industrial frames, and structural steel assemblies where Grade 9 alloy steel strength specifications are called out in the design or maintenance documentation.

Key Features

• Grade 9 alloy steel construction for superior tensile and proof load strength compared to Grade 5 and Grade 8 fasteners
• Partial threading provides a smooth shank section in the grip zone, optimizing shear load performance
• Clear zinc chromate finish offers corrosion protection for general industrial service environments
• 1-8 thread size with 5-1/2 inches of length under the head accommodates thick material stacks and deep joint assemblies
• Hex head drive accepts standard hex wrenches and impact sockets for fast, high-torque installation

Compatibility

Designed as a high-strength replacement or service fastener for industrial and structural applications specifying a 1-8 thread size, 5-1/2 inch length, Grade 9 alloy steel hex head cap screw with clear zinc chromate finish.

Installation Notes

Installation should be performed by qualified mechanics or ironworkers using calibrated torque wrenches sized for the hex head drive. Always consult the applicable engineering specification or torque table for Grade 9 fasteners before final tightening. Inspect the mating threads and joint surfaces for debris or damage before assembly. Follow applicable ASME or AISC fastener installation standards for structural connections.