Screw cylindrical head - hex DIN 912 M20x290-12.9

Product detailed description

The cylinder head screw with internal hexagon according to DIN 912, equivalent to ISO 4762 and ČSN 021143, is designed for fixed screw connections that require high preload. This type of screw is ideal for applications where high strength and reliability of the connection are required. The screw has a diameter of M20 and a length of 290 mm, which makes it suitable for use in structures with larger dimensions and higher demands on the strength of the connections.

The screw is made of steel of strength class 12.9, which means that it has a very high tensile strength and is able to withstand significant loads. Strength class 12.9 indicates a minimum tensile strength of 1200 MPa and a minimum yield strength of 1080 MPa, which guarantees its use in demanding industrial applications.

The screw head is cylindrical with an internal hexagon (inbus), which allows it to be assembled and disassembled using an Allen key. This type of head provides efficient torque transmission and minimizes the risk of damage to the head during assembly. The screw is supplied without surface treatment, but can be blackened to increase corrosion resistance in less demanding environments.

Due to its properties, this screw is suitable for use in mechanical engineering, the automotive industry, construction and other areas where it is necessary to ensure a strong and reliable connection of components. Its use is particularly advantageous where high joint strength is required and where the screws are exposed to high mechanical loads.