M3‑0.50 x 20mm Button Socket Cap Screw – Class 10.9, Black Oxide, ISO 7380

Designed for applications requiring extended fastening length and dependable strength, this M3‑0.50 x 20mm button socket cap screw is manufactured from Class 10.9 alloy steel and produced to ISO 7380 standards. The longer shank allows for deeper thread engagement through thicker components, improving joint reliability. Its low‑profile button head provides a smooth, finished appearance in visible or clearance‑restricted assemblies, 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 clean technical look ideal for electronics, instrumentation, and mechanical assemblies.