M16‑2.00 x 40mm Button Socket Cap Screw – Class 10.9, Black Oxide, ISO 7380

Built for demanding metric fastening applications where high strength and controlled head clearance are required, this M16‑2.00 x 40mm button socket cap screw is manufactured from Class 10.9 alloy steel and produced to ISO 7380 standards. The 40mm length provides solid thread engagement for secure clamping in heavy mechanical and structural assemblies, while the low‑profile button head helps reduce snagging and maintains a clean, finished appearance in exposed installations. Featuring an internal hex drive for reliable torque transfer, it is finished with a thermal black oxide coating that reduces glare, offers mild corrosion resistance, and delivers a consistent technical surface suitable for industrial and machinery use.