5/16"-18 X 2-1/2" Machine Screws | Flat Head | Phillips Drive | Steel Black Zinc (750/Pkg.)

Phillips Flat-Head Machine Screws, Steel with Black Zinc Finish — 5/16-18 x 2-1/2 are precision-engineered fasteners designed for secure, low-profile mounting of metal panels, brackets, and enclosures. Constructed from durable steel and finished in black zinc, these screws deliver reliable performance and a clean appearance in exposed or concealed installations.

Key Specifications

• Size: 5/16-18 UNC
• Length: 2-1/2 inches
• Drive: Phillips
• Head Type: Flat
• Material: Steel
• Finish: Black zinc

Applications

Ideal for securing metal panels, enclosures, electronic housings, and brackets where a flush, low-profile head is desired. The Phillips drive ensures easy installation with standard screwdrivers, even in tight or confined spaces, while the black zinc finish provides corrosion resistance and a sleek, professional look.

Why Choose These Screws

Durable steel construction paired with a corrosion-resistant black zinc finish makes these screws suitable for both indoor and light outdoor use. The flat head sits flush with surfaces for a clean appearance, and the 5/16-18 threading offers a strong hold on metal components common in equipment, furniture assemblies, and DIY projects.