M5‑0.80 x 20mm Button Socket Cap Screw – Class 10.9, Black Oxide, ISO 7380

Engineered for metric fastening applications that require increased reach and high tensile strength, this M5‑0.80 x 20mm button socket cap screw is manufactured from Class 10.9 alloy steel and produced to ISO 7380 standards. The 20mm length allows for deeper thread engagement through thicker components, improving joint stability and load retention. Its rounded, low‑profile button head minimizes protrusion while maintaining a clean, professional appearance, and the internal hex drive supports controlled torque application. Finished with a thermal black oxide coating, it delivers reduced glare, mild corrosion resistance, and a durable technical finish suited for industrial, machinery, and precision mechanical assemblies.