Bowmalloy BOW36217 Hex Head Cap Screw Grade 9 Steel

Product Description

The BOWMALLOY BOW36217 is a Grade 9 steel hex head cap screw sized at 1-8 x 3 inches with full threading along the shank. It features a Bowma-Guard zinc-plated clear chromate finish that provides corrosion resistance in demanding service environments. This fastener is designed for high-strength bolted connections where Grade 9 rated material is specified. Licensed tradespeople in HVAC, plumbing, electrical, and mechanical contracting regularly use Grade 9 hex cap screws where Grade 5 or Grade 8 hardware is insufficient for the application load requirements.

This screw is suited for structural and mechanical assemblies requiring a coarse 1-8 thread pitch in a 3-inch under-head length. The fully threaded shank provides consistent clamping engagement across the full grip length, making it appropriate for thinner material stacks and applications where maximum thread engagement is required. Typical install scenarios include equipment mounting, mechanical framing, and industrial fixture assembly.

Key Features

• Grade 9 steel construction for high-strength fastening applications
• Fully threaded shank provides maximum thread engagement across full grip length
• Bowma-Guard zinc-plated clear chromate finish for corrosion resistance
• Coarse 1-8 thread pitch in standard inch measurement system
• 3-inch under-head length suits medium-depth bolted connections

Compatibility

Designed as a standard inch-series hex head cap screw for use in mechanical and structural assemblies requiring a 1-8 coarse thread, 3-inch length, Grade 9 rated fastener.

Installation Notes

Installation should be performed by qualified tradespeople following applicable mechanical and structural codes. Always use a calibrated torque wrench and consult the equipment manufacturer's fastener torque specifications before tightening. Inspect mating threads for damage or contamination before assembly. Do not mix Grade 9 fasteners with lower-grade nuts or threaded inserts not rated for the load requirement.