M3‑0.50 x 20mm Button Socket Cap Screw – Class 10.9, Zinc‑Baked (Cr+3), ISO 7380

Engineered for high‑strength metric fastening where extended length is required, this M3‑0.50 x 20mm button socket cap screw is manufactured from heat‑treated Class 10.9 alloy steel and produced to ISO 7380 standards. The 20mm length allows for deeper thread engagement in thicker or multi‑layer assemblies, ensuring secure and reliable clamping. Its smooth, low‑profile button head provides a clean, finished appearance in clearance‑restricted or visible applications, while the internal hex drive supports precise torque control. Finished with a zinc‑baked coating and trivalent chromium (Cr+3) passivation, it delivers enhanced corrosion resistance while reducing the risk of hydrogen embrittlement—ideal for mechanical, automotive, and industrial use.