1/2"-13 X 4" Machine Screws | Round Head | Phillips Drive | Steel Zinc Plated (100/Pkg.)

Machine Screws Phil Round Steel Zinc Plated 1/2-13 x 4 — a reliable fastener engineered for strength and precision. These Phillips round head machine screws are made from durable steel and finished with a zinc plating for corrosion resistance and a clean, professional appearance. With a 1/2 inch diameter, 13 threads per inch (1/2-13 UNC), and 4 inches in length, they are ideal for metal-to-metal assemblies, enclosures, electrical panels, and machinery that demand a secure, long-lasting grip.

Key features include a Phillips drive for consistent, easy tightening, a round head that sits flush with varying surfaces, and a zinc-plated finish that resists rust in moderate environments. These screws pair with standard 1/2-13 nuts or tapped holes, providing a versatile solution for a wide range of projects.

Applications: use in automotive panels, equipment housings, electrical enclosures, metal furniture, and general machinery assembly where strong joint integrity is required.

Materials and finish: Material: steel; Finish: zinc plated; Head type: Phillips round; Thread: 1/2-13 UNC; Length: 4 inches. This combination delivers durability and corrosion resistance at a value price.

Specifications

Diameter: 1/2 in; Thread pitch: 13 TPI; Length: 4 in; Drive: Phillips; Material: Steel; Finish: Zinc plated; Standards: UNC.