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The VALUE COLLECTION R63091920 is a 3/8-16 x 1 inch brass hex head cap screw designed for general fastening applications in plumbing, HVAC, electrical, and mechanical assemblies. The screw features a Unified National Coarse (UNC) thread form and a 9/16 inch hex drive head, making it compatible with standard wrenches and hex sockets. Brass construction provides corrosion resistance and electrical conductivity properties that make this fastener well-suited for environments where steel fasteners would corrode or cause galvanic compatibility concerns. Length is measured under the head at 1 inch.
This fastener is used across residential and light commercial trade applications where brass is specified for corrosion resistance, conductivity, or compatibility with non-ferrous fittings and fixtures. Common installation scenarios include plumbing fixture mounting, electrical panel and enclosure assembly, HVAC equipment covers, and general mechanical fastening where a corrosion-resistant threaded fastener is required. The 3/8-16 UNC thread pattern is one of the most widely used coarse-thread sizes in inch-system assemblies. Sold individually; minimum order quantity is 5 pieces.
Designed as a standard inch-system UNC hex head cap screw suitable for use in any application specifying a 3/8-16 x 1 inch brass fastener with a hex drive head.
Install using a 9/16 inch open-end, box, or socket wrench. Ensure the mating tapped hole or nut is also 3/8-16 UNC thread before installation. When installing in plumbing or electrical enclosures, de-energize and de-pressurize the system before disassembly or fastener replacement. Do not overtighten brass fasteners, as brass is softer than steel and threads can strip under excessive torque.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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