Button head hex socket screws with flange according to ISO 7380-2, property class 10.9, with a NiS black nickel coating. The button head features a rounded, raised head profile, while the integral flange increases the bearing surface and helps distribute the clamping load across the joint. The hex socket provides secure and controlled torque transmission during installation. The NiS black nickel coating provides corrosion protection and a black surface finish. This category includes multiple sizes for machinery, equipment and industrial assemblies where high strength, corrosion protection and an increased bearing surface are important requirements.