M4‑0.70 x 30mm Button Socket Cap Screw – Class 10.9, Zinc‑Baked (Cr+3), ISO 7380

Engineered for high‑strength metric fastening where extended length and durability are required, this M4‑0.70 x 30mm button socket cap screw is manufactured from heat‑treated Class 10.9 alloy steel and conforms to ISO 7380 standards. The 30mm length allows for deep 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 exposed or clearance‑restricted applications, while the internal hex drive enables precise torque control. Finished with a zinc‑baked coating and trivalent chromium (Cr+3) passivation, it offers enhanced corrosion resistance and reduced risk of hydrogen embrittlement, making it well suited for industrial, automotive, and mechanical use.