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

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.