1/4″-20 X 1/2″ Machine Screws Round Head Phillips Drive Steel Black Zinc (4000/Pkg.) Cheap

Enhance your metal fastening with the Machine Screws Phil Round Steel Black Zinc 1/4-20 x 1/2. Engineered for durability and reliable performance in a range of applications, these Phillips round head machine screws are built from solid steel and finished with a corrosion-resistant black zinc coating.

Designed for high-precision assemblies, they pair perfectly with tapped holes or mating nuts, providing secure fastening in enclosures, electronics, machinery, and automotive projects. The 1/4-20 thread size is a common choice for medium-duty assemblies, while the 1/2 inch length delivers the right balance of grip and flush mounting.

Key Features

Head style: Phillips round head for a flush, clean look and reliable drive

Material: Hardened steel for strength and durability

Finish: Black zinc coating for corrosion resistance and a sleek appearance

Size: 1/4-20 UNC thread, 1/2 inch long

Drive: Phillips drive compatible with standard screwdrivers

Specifications

Thread size: 1/4-20

Length: 1/2 in (12.7 mm)

Diameter: 0.250 in (6.35 mm) nominal

Material: Steel

Finish: Black zinc

Head type: Phillips round head

Tip: When selecting fasteners, ensure compatibility with your threaded components and correct torque to prevent stripping. Always use the appropriate screwdriver bit to avoid cam-out and maintain drive quality.