Value Collection 204280B Hex Head Cap Screw 5/8-11

Product Description

The VALUE COLLECTION 204280B is a hex head cap screw designed for fastening applications that demand corrosion resistance and mechanical strength. Manufactured from Grade 316 stainless steel with a bright, uncoated finish, this fastener features a 5/8-11 UNC thread and a length under head of 2.25 inches. The partial threading provides a smooth shank section, which helps maintain shear strength and allows for precise clamping in bolted joint assemblies. This screw is used by mechanical contractors, plumbers, pipefitters, and industrial maintenance technicians in environments where exposure to moisture, chemicals, or saltwater is a concern.

This fastener is suited for corrosive-environment installations including marine hardware, chemical process equipment, food processing facilities, coastal HVAC mounting structures, and plumbing system supports. Grade 316 stainless steel contains molybdenum, which enhances resistance to chloride-based corrosion compared to Grade 304. The 5/8-11 UNC thread pattern is a standard inch-series coarse thread, compatible with common hex nuts, washers, and tapped holes of the same specification. Sold individually, this screw is appropriate for repair, replacement, or low-quantity fabrication work.

Key Features

• Grade 316 stainless steel construction for superior resistance to chlorides and corrosive media
• 5/8-11 UNC coarse thread for broad compatibility with standard inch-series fastener hardware
• Partially threaded shank maintains shear strength in structural and high-load bolted joints
• Bright, uncoated finish with no plating or coating that could flake, chip, or degrade
• Length under head of 2.25 inches suits medium-depth clamping applications

Compatibility

Designed for use with standard 5/8-11 UNC hex nuts, flat washers, and lock washers in inch-series fastener assemblies. Compatible with tapped holes machined to 5/8-11 UNC thread specification.

Installation Notes

Install using a standard hex wrench or socket set sized for 5/8-inch hex head fasteners. Ensure mating threads are clean and free of debris before installation. When installing into dissimilar metals, consider using an anti-seize compound to prevent galvanic corrosion and galling. Torque to values appropriate for the application and joint material as specified by the project engineer or applicable mechanical code.