Screw cylindrical head - hex DIN 912 M4x25-8.8

Product detailed description

The cylinder head screw with internal hexagon, also known as an Allen screw, is manufactured according to DIN 912, ISO 4762 and ČSN 021143 standards. This screw is designed for fixed screw connections that require high preload. It is ideal for assembly using an Allen key, which allows for efficient torque transmission and reduces the risk of damage to the screw head during assembly.

The screw has a metric thread with a diameter of M4 and a pitch of 0.70 mm. The total length of the screw is 25 mm, while the thread length is 20 mm. The cylinder head has a diameter of 7 mm and a height of 4 mm. The width for the Allen key is 3 mm, which corresponds to the standard dimensions for this type of screw.

The material of the screw is steel with a strength class of 8.8, which means that it has a minimum yield strength of 640 MPa and a minimum tensile strength of 800 MPa. The screw is supplied without surface treatment, but can be blackened to increase corrosion resistance.

This screw is suitable for use in various industrial applications where high joint strength and assembly accuracy are required. It is ideal for mechanical structures where reliability and resistance to mechanical stress are important.