Value Collection R63062960 Flat Head Machine Screw 4-40

Product Description

The VALUE COLLECTION R63062960 is a 4-40 x 1/2-inch flat head slotted machine screw made from grade 18-8 stainless steel with a bright, uncoated finish. It uses a Unified National Coarse (UNC) thread form and is measured by overall length. The flat head profile sits flush with or below the surface of the mating material, making it well suited for applications where a low-profile fastener is required. Grade 18-8 stainless steel provides solid corrosion resistance in general-purpose indoor and outdoor environments. These screws are sold in a minimum order quantity of 100 pieces per package and are appropriate for light mechanical assembly work performed by technicians, equipment fabricators, and maintenance professionals.

This screw is used in light-duty mechanical assemblies, electrical enclosures, control panels, and instrumentation brackets where a small-diameter threaded fastener is needed. The 4-40 thread size is common in electronics, HVAC controls, and similar applications that call for fine, precise fastening in thin or tapped metal and plastic components. The slotted drive is compatible with standard flat-blade screwdrivers. No washer is included or required by design, as the fastener is intended for direct flush-seat installation.

Key Features

• 4-40 UNC thread for precise engagement in tapped holes in metal and plastic
• Flat head profile allows flush or countersunk seating
• Slotted drive compatible with standard flat-blade screwdrivers
• Grade 18-8 stainless steel construction for corrosion resistance
• Bright uncoated finish with no washer, suitable for clean-assembly environments
• Sold in multiples of 100 for job-site and shop restocking efficiency

Compatibility

Designed as a general-purpose UNC machine screw for use in any application that accepts a 4-40 tapped hole, including control enclosures, panel boards, electronics assemblies, and light mechanical components.

Installation Notes

Installation is performed with a standard flat-blade screwdriver sized to the slotted head. Ensure the receiving hole is properly tapped to 4-40 UNC specifications before driving the screw to avoid cross-threading. Do not overtighten stainless steel fasteners in stainless or aluminum tapped holes, as galling can occur. Follow applicable mechanical and electrical enclosure codes when fastening within listed equipment.