Fractional Sizes Black Oxide Socket Head
Fractional Size Flat Head Socket Head Cap Screw with Black Oxide Plating
The Fractional Size Flat Head Socket Head Cap Screw with Black Oxide Plating is a premium fastener engineered for applications requiring strength, precision, and a flush, streamlined surface finish. Manufactured from high-grade alloy steel and heat-treated for maximum tensile strength, these screws conform to ANSI/ASME B18.3 specifications, ensuring consistency and reliability in critical fastening operations.
The defining feature of the flat head design is its ability to sit flush with or below the surface of the workpiece, providing a smooth, snag-free appearance that’s ideal for machinery, tooling, and electronic enclosures. The internal hex drive allows for precise torque application, easy installation, and removal even in confined areas. This makes the screw particularly valuable in precision assemblies, metal fabrication, die sets, and aerospace or automotive equipment where both form and function matter.
The black oxide plating adds a professional appearance while providing mild corrosion resistance and reducing light reflection. It also enhances lubricity, allowing for controlled torque and consistent clamping force during assembly. The finish not only protects against moisture but also improves wear resistance—helping extend the lifespan of both the screw and the mating components.
Available in a full range of fractional Fractional diameters and lengths, these screws are ideal for use where strength, precision fit, and low-profile installation are required. When paired with hardened washers or matching threaded components, they deliver secure, vibration-resistant fastening in demanding mechanical environments.
Proudly manufactured to U.S. industrial standards, the Fractional Size Flat Head Socket Head Cap Screw with Black Oxide Plating combines performance, aesthetics, and reliability—making it a trusted choice for professionals who demand excellence in every detail of their assembly.