Countersunk Allen screw DIN 7991 M16x55-10.9 galvanized

Product detailed description

The DIN 7991 M16x55-10.9 zinc-plated countersunk head screw is a high-quality fastener designed for demanding structural applications. This type of screw is characterized by a countersunk head, which allows you to create a flat surface of the joint, minimizing the risk of seizing or damaging the surface. The internal hexagon, also known as the hexagon, provides effective torque transmission during assembly and disassembly, increasing the reliability and strength of the joint.

The screw has a metric thread with a diameter of M16 and a length of 55 mm, while the thread pitch is 2.00 mm. The head shape is countersunk with an angle of 90°, which corresponds to the standards DIN 7991, ISO 10642 and ČSN 021144. The head diameter (dk) is 30 mm, the head height (h) is 5.3 mm and the width of the internal hexagon (s) is 10 mm. The cone height (k) is 8.8 mm, which ensures optimal distribution of forces in the joint.

The screw material is steel of strength class 10.9, which guarantees high resistance to mechanical stress. The surface treatment is white zinc plating, which provides additional protection against corrosion, thus extending the service life of the component even in difficult conditions. This type of screw is ideal for use in metal structures, where high strength and reliability of the joint are required.