Bowmalloy 36185 Hex Head Cap Screw 3/4-10 X 6-1/2 in Grade 9

Product Description

The BOWMALLOY 36185 is a Grade 9 alloy steel hex head cap screw engineered for high-strength fastening applications. Measuring 3/4-10 thread size with a 6-1/2 inch length under the head, this partially threaded fastener delivers the clamping force and tensile strength required in demanding structural and mechanical assemblies. The clear zinc chromate finish provides corrosion resistance while maintaining dimensional tolerances. Licensed contractors, millwrights, and field technicians specify Grade 9 hardware where standard Grade 5 or Grade 8 fasteners are insufficient for load requirements.

This cap screw is suited for heavy equipment assembly, structural steel connections, and industrial machinery installations where high-strength inch-series fasteners are required. The 3/4-10 coarse thread pattern is standard across a wide range of American National Standard and SAE hex fastener applications. Partial threading allows the unthreaded shank to bear shear loads in close-tolerance bolt holes, making it a practical choice for flanged joints and equipment mounting in commercial and industrial settings.

Key Features

• Grade 9 alloy steel construction for elevated proof load and tensile strength beyond Grade 8
• 3/4-10 UNC coarse thread for broad compatibility with standard inch-series nuts and tapped holes
• 6-1/2 inch length under head accommodates thick stack-ups and long-reach fastening requirements
• Partially threaded shank supports shear load bearing in precision bolt holes
• Clear zinc chromate finish adds corrosion resistance for indoor and sheltered outdoor installations

Compatibility

Designed as a standard inch-series hex head cap screw for use with 3/4-10 UNC nuts, threaded inserts, and tapped holes conforming to ASME B18.2.1 dimensional standards for heavy hex and standard hex fastener applications.

Installation Notes

Installation should be performed by qualified mechanics or tradespeople using calibrated torque wrenches to achieve the proper clamp load for Grade 9 hardware per applicable engineering specifications. Inspect mating threads and hole surfaces for damage or contamination before assembly. Do not reuse fasteners that have been overtorqued, stretched, or exposed to impact loading. Follow applicable OSHA, ASME, or equipment OEM torque guidelines for the specific joint design.