Value Collection R52001098 Hex Head Cap Screw Grade 5

Product Description

The VALUE COLLECTION R52001098 is a partially threaded hex head cap screw designed for heavy-duty mechanical and structural fastening applications. It features a 1-1/2-6 UNC thread size with a 4-1/2-inch length under head, manufactured from Grade 5 steel with a zinc-plated finish for corrosion resistance. Weighing 3.15 pounds, this fastener meets ASME B18.2.1 and SAE J429 standards, making it suitable for high-strength bolted connections. Licensed tradespeople and industrial maintenance technicians rely on this size for large-bore assembly work where precise thread engagement and clamping force are required.

This hex head cap screw is used in industrial equipment assembly, structural steel fabrication, heavy machinery maintenance, and large mechanical systems where inch-series UNC fasteners are specified. The partial threading allows the unthreaded shank to bear shear loads, a common requirement in bolted joint designs for flanges, brackets, and machine frames. It is appropriate for both shop and field installation by maintenance mechanics, millwrights, pipefitters, and other trades working with large-diameter fasteners.

Key Features

• Grade 5 steel construction meets SAE J429 minimum tensile strength requirements for medium-strength fasteners
• Zinc-plated finish provides corrosion protection in typical indoor and light outdoor service environments
• Partially threaded shank allows unthreaded section to carry shear loads in bolted joints
• UNC thread form (1-1/2-6) conforms to ASME B18.2.1 inch-series dimensional standards
• 4-1/2-inch length under head accommodates thick material stacks and deep grip lengths

Compatibility

Designed for use in any application requiring a 1-1/2-6 UNC partially threaded hex head cap screw conforming to ASME B18.2.1 and SAE J429 standards in inch-series fastener specifications.

Installation Notes

Installation should be performed by qualified mechanics or tradespeople familiar with large-diameter bolted joint procedures. Always degrease mating threads and apply appropriate thread lubricant or anti-seize compound per the joint specification before installation. Tighten to the torque value specified by the equipment manufacturer or the applicable structural or mechanical code for Grade 5 fasteners of this diameter. Inspect threads on both the fastener and the mating nut or tapped hole for damage before assembly.