Countersunk Allen screw DIN 7991 M12x20-10.9 galvanized

Product detailed description

The DIN 7991 M12x20-10.9 zinc-plated countersunk head screw is a high-quality fastener designed for demanding structural applications where a strong and reliable connection is required. This screw is made of steel with a strength class of 10.9, which guarantees high tensile strength and resistance to mechanical stress. The zinc-plated surface treatment provides protection against corrosion, thereby extending the life of the component in various operating conditions.

The screw has a metric thread with a diameter of M12 and a length of 20 mm. The thread pitch is 1.75 mm, which is a standard value for this type of thread, and ensures a reliable hold. The countersunk head with an internal hexagon allows the screw to be recessed into the material so that the head is flush with the surface, which is ideal for applications where it is necessary to maintain a smooth surface. The head diameter (dk) is 24 mm, the head height (h) is 4.6 mm and the width of the internal hexagon (s) is 8 mm.

The DIN 7991, ISO 10642 and ČSN 021144 standards guarantee that the screw meets internationally recognized standards for dimensions and quality. The head angle is 90°, which is typical for countersunk screws and ensures optimal pressure distribution when tightening. The screw is suitable for use in metal and structural applications where it is important to achieve an aesthetically clean and functional joint.