M4‑0.70 x 30mm Button Socket Cap Screw – Class 10.9, Black Oxide, ISO 7380

Designed for metric fastening applications that require extended length and consistent strength, this M4‑0.70 x 30mm button socket cap screw is manufactured from high‑strength Class 10.9 alloy steel and produced to ISO 7380 standards. The 30mm length allows for deep thread engagement through thicker components or stacked assemblies, improving joint stability. Its low‑profile button head maintains a smooth, finished appearance in exposed or clearance‑limited installations, while the internal hex drive enables precise torque application. Finished with a thermal black oxide coating, it provides reduced glare, mild corrosion resistance, and a uniform technical finish ideal for machinery, tooling, and precision mechanical applications.