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The VALUE COLLECTION R63091844 is a brass hex head cap screw with a 5/16-18 UNC thread and a 1-1/2 inch length under head. It is designed for fastening applications where corrosion resistance and electrical conductivity are required. Brass construction makes this screw well suited for plumbing, electrical, and marine-adjacent installations where steel fasteners would corrode or create galvanic incompatibility. The hex drive head accepts a standard wrench or socket for reliable torque application. Licensed trades and maintenance technicians working on HVAC, plumbing, and electrical enclosures commonly specify brass fasteners to meet material compatibility requirements.
This screw is used in residential and light commercial applications where a UNC-threaded brass fastener is required for panel assembly, fixture mounting, valve body connections, or equipment enclosures. The 5/16-18 thread size is a standard coarse-thread designation widely used across trade applications. It is sold in a minimum order quantity of 5 pieces, making it practical for service stock or small-batch repair work.
Designed as an OEM-style replacement or service fastener for any application requiring a 5/16-18 UNC brass hex head cap screw with a 1-1/2 inch length under head.
Installation is performed with a standard 1/2 inch wrench or socket. De-energize and depressurize the assembly before removing or replacing fasteners in live systems. Do not overtighten brass fasteners, as brass is softer than steel and the threads can strip under excessive load. Follow applicable codes such as NEC or IPC where fastener material requirements are specified.
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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