Value Collection R63283928 Brass Thumb Screw 1/4-20

Product Description

The VALUE COLLECTION R63283928 is a brass thumb screw designed for hand-tightened fastening applications where tools are not required. It features a 1/4-20 UNC thread and an oval head profile that provides a comfortable grip surface for repeated manual adjustment. The head measures 0.55 inches in diameter and 0.64 inches in height, with an overall length of 0.5 inches. Made from brass, this fastener offers good corrosion resistance and is well suited for assemblies where metal-to-metal galling must be minimized. Machinists, maintenance technicians, and equipment assemblers commonly use this type of thumb screw in panels, fixtures, and adjustable components.

This thumb screw is used in light-duty mechanical assemblies, instrument panels, access covers, and jig-and-fixture work where frequent hand adjustment is needed. The oval head style provides a low-profile, rounded grip that is practical in confined spaces. It follows inch-based UNC thread standards, making it compatible with standard 1/4-20 tapped holes found in a wide range of industrial and commercial equipment.

Key Features

• 1/4-20 UNC thread for compatibility with standard tapped holes
• Oval head design allows hand-tightening without tools
• Brass construction resists corrosion and reduces galling risk
• Head diameter of 0.55 inches provides adequate grip surface
• Compact 0.5 inch overall length suits shallow clearance applications
• No-shoulder design for straightforward through-hole installation

Compatibility

Designed as a direct-fit replacement or new installation fastener for any assembly using a standard 1/4-20 UNC tapped hole requiring hand-adjustable, tool-free fastening.

Installation Notes

Installation is performed by hand without special tools. Ensure the mating tapped hole is clean and free of debris before threading in the screw. Do not use a wrench or driver on an oval head thumb screw, as the head is not designed for tool torque and may deform. Inspect threads for damage before reinstalling in precision or instrumentation assemblies.