Value Collection R63091842 Hex Head Cap Screw Brass

Product Description

The VALUE COLLECTION R63091842 is a brass hex head cap screw with a 5/16-18 thread size and a 2-inch length under head. It is machined to Unified National Coarse (UNC) thread standards, making it a standard Inch-system fastener used in light mechanical assemblies, plumbing fixture mounting, and general trade applications. The 1/2-inch hex drive head accepts a standard wrench or socket. Brass construction provides natural corrosion resistance, making it a practical choice in humid or mildly corrosive environments where steel fasteners are a poor fit.

This fastener is commonly used in plumbing, HVAC, pool equipment mounting, and light electrical enclosure work where non-magnetic, corrosion-resistant fasteners are required. Brass is also a preferred material in applications where galvanic compatibility with copper or bronze fittings is a concern. Trade professionals install these screws in fixture brackets, panel covers, and equipment mounting points that call for a UNC threaded fastener in the 5/16-18 size range.

Key Features

• Brass construction resists corrosion in humid and mildly corrosive environments
• 5/16-18 UNC thread — standard Inch-system coarse thread
• 2-inch length under head for secure fastening through moderate material thickness
• 1/2-inch hex head accepts standard wrenches and sockets
• Non-magnetic material suitable for applications requiring spark or magnetic resistance

Compatibility

Designed as a standard 5/16-18 UNC Inch-system hex head cap screw compatible with any tapped hole or nut conforming to 5/16-18 Unified National Coarse thread specifications.

Installation Notes

Install using a 1/2-inch open-end wrench, box wrench, or socket driver. De-energize and de-pressurize any equipment before fastening or removing hardware in mechanical or electrical assemblies. Avoid overtightening brass fasteners, as the material is softer than steel and susceptible to thread stripping or head rounding. Apply thread sealant or anti-seize compound only where required by the equipment manufacturer or applicable code.