Bowmalloy 36133 Hex Head Cap Screw 9/16-12 X 2 in Grade 9

Product Description

The BOWMALLOY 36133 is a fully threaded hex head cap screw designed for high-strength fastening applications in mechanical, structural, and industrial assemblies. It features a 9/16-12 thread size with a 2-inch length under head, and is manufactured from Grade 9 alloy steel for superior tensile and yield strength compared to standard Grade 5 or Grade 8 hardware. The clear zinc chromate finish provides corrosion resistance while maintaining a clean, bright appearance. This fastener is sold in packages of 25, making it suitable for both single-repair tasks and higher-volume production or maintenance work.

This cap screw is suited for heavy-duty bolted connections where high clamping force and vibration resistance are required. Typical applications include equipment frames, agricultural machinery, off-highway vehicles, and industrial machinery assemblies. Grade 9 hardware is specified when engineers or OEM service manuals call for stronger-than-Grade-8 fasteners in critical joint applications. Licensed trades and maintenance professionals working on mechanical assemblies will commonly specify this grade for high-stress fastener locations.

Key Features

• Grade 9 alloy steel construction delivers higher proof load and tensile strength than Grade 8
• 9/16-12 UNC thread size with full threading along the 2-inch length under head
• Clear zinc chromate finish provides corrosion and oxidation resistance
• Inch measurement system; compatible with standard 9/16-12 UNC tapped holes and nuts
• UNSPSC Code 31161501 for procurement and catalog classification
• Packaged in quantities of 25 per unit

Compatibility

Designed as a standard inch-series hex head cap screw for use in any application requiring a 9/16-12 UNC fully threaded fastener with Grade 9 alloy steel strength specifications.

Installation Notes

Install using a standard hex wrench or socket sized for a 9/16-12 hex head cap screw. Always consult the equipment service manual or engineering drawings for the correct torque specification before tightening - do not estimate torque on Grade 9 fasteners in critical joints. Ensure the mating tapped hole or nut is also rated for the clamping loads associated with Grade 9 hardware. Power down and de-energize any equipment before disassembling fastened assemblies on live machinery.