Bowmalloy 36308 Hex Head Cap Screw 1/4-28 X 2 in Grade 9

Product Description

The BOWMALLOY 36308 is a Grade 9 alloy steel hex head cap screw with a 1/4-28 thread size and a 2-inch length under head. It features a zinc-plated clear chromate finish that provides corrosion resistance in demanding environments. The partial threading design allows for controlled clamping force across a wide range of fastening applications. This fastener meets the high-strength requirements expected of Grade 9 hardware, making it a reliable choice for critical mechanical assemblies in trade and industrial settings.

This hex head cap screw is suited for use in mechanical, structural, and equipment assembly applications where a fine-thread, high-strength fastener is required. The 1/4-28 fine thread pitch provides superior holding power compared to coarse-thread equivalents, making it well-suited for applications involving vibration or precision-fitted components. Typical installers include millwrights, HVAC technicians, electricians, and general mechanical tradespeople working on equipment panels, brackets, and assemblies.

Key Features

• Grade 9 alloy steel construction for high tensile and proof load strength
• 1/4-28 fine thread (UNF) for superior vibration resistance and precise torque control
• Partially threaded shank allows for improved clamping and shear load performance
• Zinc-plated clear chromate finish provides corrosion protection in moderate environments
• Inch measurement system for compatibility with standard US fastener applications

Compatibility

Designed as a high-strength replacement fastener for applications requiring a 1/4-28 UNF hex head cap screw in Grade 9 alloy steel. Suitable for use wherever fine-thread, partially threaded hex cap screws are specified in mechanical or structural assemblies.

Installation Notes

Install using a standard hex wrench or socket driver sized for a 1/4-inch hex head cap screw. De-energize or isolate any equipment before fastener replacement or assembly work. Follow torque specifications provided by the equipment manufacturer or applicable industry standards for Grade 9 fine-thread fasteners. Avoid cross-threading by starting fasteners by hand before applying tool torque.