Value Collection R63288449 Brass Thumb Screw 1/4-20

Product Description

The VALUE COLLECTION R63288449 is a brass thumb screw with a 1/4-20 UNC thread and an oval head profile. Designed for hand-tightening applications, it allows secure fastening without tools in assemblies where frequent removal or adjustment is required. The oval head measures 0.55 inches in diameter and 0.64 inches in height, providing a comfortable grip surface. The overall length is 1 inch. Made from brass, this fastener offers corrosion resistance and is well suited for use in electrical enclosures, instrumentation panels, HVAC equipment covers, and light mechanical assemblies. Installation is performed by hand or with a standard flat-blade screwdriver.

This thumb screw is a general-purpose fastener commonly used in trade and industrial settings where tool-free access panels, covers, or components need to be secured and released repeatedly. Typical applications include equipment access doors, junction box covers, control panel assemblies, and fixture mounting in HVAC, electrical, and plumbing work. The 1/4-20 UNC thread is one of the most common unified coarse thread sizes in inch-measurement systems, making this fastener compatible with a wide range of standard tapped holes and threaded inserts encountered in the field.

Key Features

• 1/4-20 UNC thread for compatibility with standard inch-system tapped holes
• Oval head profile enables hand-tightening without tools
• Brass construction provides corrosion resistance in moderate-humidity environments
• 0.55 inch head diameter and 0.64 inch head height for a positive grip
• 1 inch overall length suits shallow to mid-depth fastening applications
• No shoulder design allows full thread engagement from the bearing surface

Compatibility

Designed as a general-purpose replacement or supplemental fastener for any assembly using a standard 1/4-20 UNC tapped hole in the inch measurement system.

Installation Notes

This fastener is installed by hand in a mating 1/4-20 UNC tapped hole or threaded insert. Confirm thread engagement is sufficient before applying any load to the assembly. Do not overtighten brass fasteners against hard metal surfaces, as brass is softer than steel and the threads can strip under excessive torque. When used in electrical or HVAC enclosures, ensure the panel or cover is de-energized or the system is shut down before removing or reinstalling access hardware.