Bowmalloy BOW36333 Hex Head Cap Screw 5/16-24 2 in

Product Description

The BOWMALLOY BOW36333 is a Grade 9 steel hex head cap screw designed for high-strength fastening applications across industrial, mechanical, and trade installations. Measuring 5/16-24 thread pitch with a 2-inch length under head, this fastener features partial threading and a Bowma-Guard zinc-plated clear chromate finish that provides corrosion resistance in exposed or moderately harsh environments. Grade 9 steel delivers tensile strength above standard Grade 5 and Grade 8 classifications, making it a common choice where vibration resistance and structural integrity are critical. Installed using a standard hex wrench or socket, this screw suits professionals who need a reliable, traceable fastener with documented material grade.

This cap screw is used in mechanical assemblies, equipment mounting, and structural connections that require fine-thread engagement in inch-series applications. The 5/16-24 fine thread offers improved thread engagement and better resistance to loosening under vibration compared to coarse-thread equivalents. Partial threading allows the unthreaded shank to act as a shoulder for load-bearing or alignment purposes. Typical installation scenarios include HVAC equipment frames, pump and motor mounts, and general industrial fabrication where Grade 9 tensile strength is specified.

Key Features

• Grade 9 steel construction for high tensile strength and vibration resistance
• 5/16-24 fine thread pitch for improved engagement and torque retention
• 2-inch length under head with partial threading for shank-bearing applications
• Bowma-Guard zinc-plated clear chromate finish for corrosion protection
• Inch-series measurement system for compatibility with standard SAE tooling

Compatibility

Designed as an OEM-style replacement or standard fastener for applications requiring a 5/16-24 inch-series hex head cap screw in Grade 9 steel with partial threading.

Installation Notes

Install using a standard hex socket or open-end wrench sized to the 5/16-inch hex head. Always verify thread engagement depth and ensure mating threads are clean and free of debris before installation. De-energize and lock out any equipment before replacing or tightening fasteners in live assemblies. Follow applicable torque specifications from the equipment manufacturer or relevant standards such as ASME B18.2.1 for hex cap screws.