Bowmalloy BOW36229 Hex Head Cap Screw 1-8x8 Grade 9

Product Description

The BOWMALLOY BOW36229 is a Grade 9 steel hex head cap screw sized 1-8 x 8 inches with a Bowma-Guard zinc-plated clear chromate finish and partial threading under the head. Grade 9 fasteners meet demanding strength requirements in heavy-duty structural and mechanical assemblies where standard Grade 5 or Grade 8 hardware is insufficient. The partial threading design provides a smooth shank section for shear-load applications. This fastener is installed by millwrights, ironworkers, and maintenance mechanics in industrial, agricultural, and heavy equipment settings.

The BOW36229 is suited for use in structural bolted connections, heavy equipment frames, agricultural machinery, and industrial fabrication applications. The Bowma-Guard finish provides corrosion resistance in outdoor and moderately harsh service environments. The 1-8 thread designation indicates a 1-inch nominal diameter with 8 threads per inch (UNC coarse thread series), and the 8-inch length under head accommodates thick stack-ups or long-reach fastening scenarios.

Key Features

• Grade 9 steel construction for high-strength structural fastening applications
• Bowma-Guard zinc-plated clear chromate finish for corrosion resistance
• Partial threading preserves a smooth shank for shear-load connections
• 1-inch nominal diameter with 8 TPI UNC coarse thread series
• 8-inch length under head for deep or thick-stack fastening applications
• Inch measurement system; UNSPSC Code 31161501

Compatibility

Designed as an OEM-style or maintenance replacement hex head cap screw for heavy-duty bolted assemblies requiring a 1-8 x 8-inch Grade 9 fastener with UNC coarse thread.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or ironworker familiar with high-strength fastener procedures. Follow applicable torque specifications from the equipment manufacturer or relevant ASME or SAE fastener standards for Grade 9 hardware. Always use a properly calibrated torque wrench and confirm thread engagement and mating nut or tapped hole are clean and undamaged before installation. De-energize or lock out equipment before performing any fastener service.