Bowmalloy BOW36174 Hex Head Cap Screw 3/4-10 X 2-1/2 in Grade 9

Product Description

The BOWMALLOY BOW36174 is a fully threaded hex head cap screw engineered for high-strength fastening in demanding industrial and mechanical applications. Built from Grade 9 steel with a Bowma-Guard zinc-plated clear chromate finish, this fastener offers superior corrosion resistance and tensile strength compared to standard Grade 5 or Grade 8 hardware. The 3/4-10 coarse thread and 2-1/2-inch length under head make it well suited for heavy structural connections, heavy equipment assembly, and industrial machinery maintenance. Licensed tradespeople and maintenance mechanics reach for Grade 9 hardware where elevated proof load and fatigue resistance matter.

This screw is appropriate for use in structural steel assemblies, agricultural equipment, heavy construction machinery, and industrial fabrication where high-strength inch-series fasteners are required. The coarse 3/4-10 thread engages quickly during assembly and resists cross-threading in field conditions. The fully threaded shank provides maximum thread engagement across the full 2-1/2-inch length, which is particularly useful when clamping thinner materials or when thread engagement depth varies.

Key Features

• Grade 9 steel construction delivers higher proof load and tensile strength than Grade 8 equivalents
• Bowma-Guard zinc-plated clear chromate finish provides corrosion resistance in exposed environments
• Fully threaded shank for maximum thread engagement across the entire 2-1/2-inch length
• 3/4-10 coarse thread series for fast assembly and reliable holding power in steel and heavy substrates
• Inch measurement system for compatibility with standard SAE tooling and torque specifications

Compatibility

Designed as an OEM-style and aftermarket replacement hex head cap screw for applications requiring 3/4-10 inch-series fasteners in Grade 9 steel. Suitable for use wherever high-strength coarse-thread 3/4-10 hex cap screws are specified.

Installation Notes

Installation should be performed by qualified mechanics or tradespeople following applicable fastener torque standards for Grade 9 hardware. Always use a calibrated torque wrench and follow the engineer-specified torque value for the joint; do not estimate by feel on structural connections. Inspect the mating threads for damage or contamination before installation, and never reuse a fastener that shows signs of yielding or thread deformation. Ensure proper washer use where bearing surface requirements are specified by the design.