M5‑0.80 x 45mm Button Socket Cap Screw – Class 10.9, Black Oxide, ISO 7380

Engineered for metric fastening applications requiring extended length and high mechanical strength, this M5‑0.80 x 45mm button socket cap screw is manufactured from heat‑treated Class 10.9 alloy steel and produced to ISO 7380 standards. The 45mm length provides deep thread engagement for secure fastening through thicker or stacked assemblies, improving joint stability under load. Its smooth, low‑profile button head maintains a clean, streamlined appearance in exposed or clearance‑limited installations, while the internal hex drive allows precise torque application. Finished with a thermal black oxide coating, it delivers reduced glare, mild corrosion resistance, and a consistent technical finish suitable for industrial, machinery, and precision mechanical applications.