M3‑0.50 x 30 mm Button Socket Cap Screw – Class 10.9, Black Oxide, ISO 7380

Built for metric fastening applications that demand extended reach and dependable strength, this M3‑0.50 x 30mm button socket cap screw is manufactured from Class 10.9 alloy steel and produced in accordance with ISO 7380 standards. The extra‑long length allows for deep thread engagement in thicker or stacked assemblies, improving joint integrity and load distribution. Its low‑profile button head provides a smooth, finished appearance in clearance‑restricted or visible installations, while the internal hex drive supports precise torque control. Finished with a thermal black oxide coating, it offers reduced glare, mild corrosion resistance, and a uniform technical finish ideal for electronics, instrumentation, and precision mechanical applications.