M2.5‑0.45 x 4mm Button Socket Cap Screw – Class 10.9, Black Oxide, ISO 7380

Engineered for precision metric fastening in compact assemblies, this M2.5‑0.45 x 4mm button socket cap screw is manufactured from high‑strength Class 10.9 alloy steel and produced to ISO 7380 standards. The short length is ideal for shallow thread engagement where space is limited, while the smooth, low‑profile button head provides a clean, professional appearance in exposed or clearance‑sensitive applications. Finished with a thermal black oxide coating, it offers reduced glare, mild corrosion resistance, and a uniform technical finish well suited for electronics, instrumentation, and precision mechanical assemblies.