Value Collection R63083642 Flat Head Machine Screw 1/4-20

Product Description

The VALUE COLLECTION R63083642 is a 1/4-20 UNC flat head slotted machine screw manufactured from brass with a bright uncoated finish. It measures 3/8 inches in overall length and features a countersunk flat head profile that sits flush with or below the mating surface when fully driven. The slotted drive accepts a standard flat-blade screwdriver. This screw is suited for mechanical assembly, electrical panel work, and light structural fastening applications where a non-ferrous, corrosion-resistant fastener is required. Installation is performed by maintenance technicians, electricians, and general tradespeople working with brass-compatible hardware.

This fastener is a general-purpose inch-system machine screw sized for 1/4-20 UNC threaded holes or nuts. It is commonly used in electrical enclosures, HVAC control panels, plumbing fixture assemblies, and light-duty mechanical assemblies where brass construction helps prevent galvanic corrosion when mating with aluminum or other non-ferrous components. The flat head design is preferred in applications requiring a flush or recessed fastener surface.

Key Features

• 1/4-20 UNC thread form for compatibility with standard inch-system tapped holes and nuts
• Flat countersunk head profile seats flush with the mating surface
• Slotted drive for use with a standard flat-blade screwdriver
• Brass construction provides corrosion resistance and non-magnetic properties
• Bright uncoated finish with no additional plating or coating
• Overall length of 3/8 inches measured from head top to tip

Compatibility

Designed for use in any standard 1/4-20 UNC tapped hole or with a 1/4-20 hex nut, applicable across a wide range of electrical, mechanical, and HVAC panel assembly applications.

Installation Notes

Installation requires a flat-blade screwdriver sized to the slot width. Always de-energize electrical panels and equipment before fastening hardware inside live enclosures, per NEC guidelines. Do not overtighten brass fasteners, as brass is softer than steel and the threads can strip under excessive torque. Confirm thread engagement depth is adequate for the application before final assembly.