Cylindrical head screw - hex DIN 912 M20x120-10.9 galvanized

Product detailed description

The cylinder head screw with internal hexagon, known as an inbus screw, is manufactured according to DIN 912, ISO 4762 and ČSN 021143. This particular model has dimensions M20x120 mm, which means that the outer diameter of the thread is 20 mm and the total length of the screw is 120 mm. The screw is made of steel with a strength class of 10.9, which guarantees high strength and resistance to mechanical stress. Strength class 10.9 indicates a minimum yield strength of 900 MPa and a minimum tensile strength of 1000 MPa.

The screw head has a cylindrical shape with an internal hexagon, which allows the use of an Allen key for assembly and disassembly. This type of head is suitable for applications where it is necessary to achieve high preload in the screw connection. The surface treatment of the screw is zinc-plated with white zinc, which provides protection against corrosion and increases its resistance in aggressive environments.

The dimensions of the head are as follows: diameter D is 30 mm, height H is 20 mm, length L1 is 52 mm, width B1 is 17 mm and thread pitch is 2.50 mm. The screw is intended for fixed connections in mechanical engineering, construction and other industries where high strength and reliability of connections are required.