Value Collection C52000657 4-40 X 0.5 in Round Head Phillips Screw

Product Description

The VALUE COLLECTION C52000657 is a 4-40 UNC machine screw with a round head and Phillips drive, manufactured from 18-8 stainless steel with a bright, uncoated finish. At 0.5 inches in length under the head, this screw is sized for small-fastener applications where corrosion resistance and reliable thread engagement matter. The 18-8 stainless steel construction provides good resistance to rust and oxidation, making it suitable for both indoor and outdoor service environments. This package contains 50 screws. Electricians, HVAC technicians, panel fabricators, and light mechanical assemblers commonly use 4-40 fasteners when securing small components to enclosures, control boards, and fixtures.

This screw is used in light-duty mechanical and electrical assembly applications. Typical uses include securing terminal blocks, cover plates, and sub-assemblies inside control panels, junction boxes, and electronic enclosures. The Phillips drive is compatible with standard Phillips screwdrivers and power drivers equipped with a No. 1 or No. 2 Phillips bit. The round head profile seats flush against flat mounting surfaces without a washer, as noted by the without-washer designation. Sold in packs of 50, this quantity is suitable for service stock or small production runs.

Key Features

• 4-40 UNC thread form for compatibility with standard 4-40 tapped holes and nuts
• 0.5-inch length under head for reliable engagement in typical panel and enclosure stock
• 18-8 stainless steel construction resists corrosion and oxidation
• Bright, uncoated finish maintains dimensional tolerances and accepts standard thread lubricants
• Round head with Phillips drive for use with common hand and power tools
• Pack of 50 screws for service stock or small-batch assembly

Compatibility

Designed for use in any application requiring a 4-40 UNC thread fastener with a round head and Phillips drive, including electrical enclosures, control panels, and light mechanical assemblies.

Installation Notes

Installation does not require specialized trade licensing but is commonly performed by electricians, HVAC technicians, and mechanical assemblers. De-energize any electrical panel or enclosure before installing or removing fasteners near live components, following applicable NEC guidelines. Use a properly sized No. 1 Phillips driver to avoid cam-out and fastener head damage. Do not overtighten into tapped plastic or thin sheet metal, as the 4-40 thread form is designed for light clamping loads.