Limited Offer 4-40 X 1/2″ Machine Screws Undercut Flat Head Phillips Drive 18/8 Stainless Steel Black Oxide (7000/Pkg.)
Original price was: $376.26.$158.03Current price is: $158.03.
Designed for secure fastening in metal-to-metal applications, the Machine Screws Phil Undercut Flat 18/8 Stainless Black Oxide 4-40 X 1/2 delivers reliable performance with a sleek, low-profile finish. These screws are engineered for durability and corrosion resistance in demanding environments.
Key Features
Material: 18/8 stainless steel (304-grade) for robust corrosion resistance and long-lasting strength.
Finish: Black oxide coating for a discreet, professional look and added protection.
Head Type: Undercut flat head designed to sit flush with surfaces for clean, finished assemblies.
Drive: Phillips (Phil) drive for easy installation with standard screwdrivers.
Size: #4-40 thread with a 1/2 inch length.
Applications
Perfect for electronics enclosures, control panels, automotive interiors, appliances, and other metal assemblies where a low-profile, corrosion-resistant screw is required.
Why Choose These Screws
With a precise underscut head and a durable 18/8 stainless construction, these screws deliver a secure fit, reliable torque tolerance, and a professional finish that stands up to daily use.





