Value Collection R52000283 4-40 Unc Slotted Machine Screw

Product Description

The VALUE COLLECTION R52000283 is a flat head slotted drive machine screw threaded to 4-40 UNC specification with an overall length of 3/8 inches. Machined from brass, this fastener delivers reliable corrosion resistance and good electrical conductivity in light-duty mechanical and electrical assemblies. The flat head countersinks flush with the mating surface, and the slotted drive accepts a standard flat-blade screwdriver. These screws are sold in a minimum quantity of 100 units per order, making them suited for production assembly, panel work, and service inventory stocking. No washer is included or integrated into the design.

This fastener is commonly used in electrical enclosures, control panels, small appliances, instrumentation, and light mechanical assemblies where a flush-mount brass screw is required. The 4-40 UNC thread is a fine-pitch unified coarse designation widely used in precision equipment and electronics. Installers working in HVAC controls, electrical panels, and low-voltage device mounting will recognize this thread size as standard for terminal boards, cover plates, and small component brackets.

Key Features

• 4-40 UNC thread for compatibility with standard tapped holes in electronics and control assemblies
• 3/8 inch overall length suits thin panel and bracket applications
• Brass construction provides corrosion resistance and low magnetic permeability
• Flat head countersinks flush with the mating surface for a clean, low-profile finish
• Slotted drive works with common flat-blade screwdrivers and bit drivers
• No washer design keeps installation straightforward and hardware count low

Compatibility

Designed as a general-purpose 4-40 UNC flat head machine screw suitable for any application requiring a brass, flush-mount fastener with a 3/8 inch overall length and slotted drive.

Installation Notes

Installation requires a flat-blade screwdriver or slotted bit sized for a 4-40 screw head. Ensure the receiving hole is properly tapped to 4-40 UNC before driving the fastener to avoid thread damage. Do not overtighten brass fasteners, as the material is softer than steel and can shear or strip under excessive torque. Power down any electrical assembly before installing or removing fasteners in live panels.