Bowmalloy 36231 Hex Head Cap Screw 1-8x9 Grade 9

Product Description

The BOWMALLOY 36231 is a Grade 9 alloy steel hex head cap screw measuring 1-8 thread size by 9 inches in length under the head. It features a clear zinc chromate finish that provides corrosion resistance in demanding fastening applications. The screw is partially threaded, which helps ensure proper clamping force between joined materials. This fastener is suited for heavy-duty mechanical and structural assemblies where high-strength bolting is required. Licensed tradespeople, millwrights, and mechanical contractors who need reliable high-grade fasteners for industrial or commercial applications will find this screw meets the performance demands of Grade 9 specifications.

The 36231 is appropriate for use in industrial machinery, structural steel connections, heavy equipment assemblies, and other applications where elevated tensile and proof load strength are necessary. Its inch-system threading and standard hex head profile make it compatible with conventional socket and open-end tooling. The clear zinc chromate finish adds a layer of protection against oxidation in environments with moderate exposure to moisture or chemicals.

Key Features

• Grade 9 alloy steel construction for high tensile strength and proof load performance
• 1-8 thread size with 9 inches of length under the head
• Partially threaded shank to maximize clamping force in bolted joints
• Clear zinc chromate finish for corrosion resistance
• Standard hex head profile compatible with common socket and wrench tooling
• Inch measurement system for straightforward integration with standard imperial hardware

Compatibility

Designed as an OEM-style replacement or direct-use fastener for heavy-duty bolted assemblies requiring Grade 9 alloy steel hex head cap screws in 1-8 thread size.

Installation Notes

Installation should be performed by qualified mechanics, millwrights, or mechanical contractors familiar with high-strength fastener procedures. Always power down and de-energize any associated equipment before servicing bolted connections. Use calibrated torque equipment to achieve proper clamp load per applicable engineering specifications for Grade 9 fasteners. Inspect mating threads and seating surfaces for damage before installation to avoid joint failure.