Bowmalloy BOW36135 Hex Head Cap Screw 9/16-12 X 2.5 in Grade 9

Product Description

The BOWMALLOY BOW36135 is a Grade 9 steel hex head cap screw sized 9/16-12 x 2.5 inches with partial threading and a Bowma-Guard zinc-plated clear chromate finish. Grade 9 fasteners exceed the tensile strength requirements of the more common Grade 8 specification, making this screw well-suited for high-stress bolted joints in heavy equipment and structural assemblies. The partial thread design allows the unthreaded shank to carry shear loads cleanly, while the hex head accommodates standard socket and wrench tooling. Licensed tradespeople and maintenance professionals working on industrial, mechanical, or structural applications will find this fastener appropriate where elevated clamp load and corrosion resistance are both required.

This cap screw is used in industrial machinery, heavy equipment frames, structural steel connections, and mechanical drive assemblies where a high-strength inch-series fastener is specified. The 9/16-12 thread is a coarse Unified National thread, standard in North American equipment manufacturing. Partial threading makes it a common choice when the grip length must pass through clearance holes before engaging a nut or tapped bore. It is sold in a package quantity of 10, with a minimum order quantity of 1 package.

Key Features

• Grade 9 steel construction for high tensile and proof load strength
• 9/16-12 UNC coarse thread, inch-series measurement system
• 2.5-inch length under head with partial threading for shear-load applications
• Bowma-Guard zinc-plated clear chromate finish for corrosion resistance
• Hex head design compatible with standard sockets and open-end wrenches
• Packaged in quantities of 10 per package

Compatibility

Designed as an inch-series Grade 9 hex head cap screw for use in any application specifying a 9/16-12 UNC partially threaded fastener with high-strength steel construction.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson familiar with proper fastener torque procedures for Grade 9 hardware. Always consult the equipment manufacturer torque specification chart for the applicable joint material and lubrication condition before final tightening. Inspect the mating thread or nut for cleanliness and damage before assembly. Do not substitute a lower-grade fastener in a joint designed for Grade 9 hardware.