Screw cylindrical head - hex DIN 912 M4x40-8.8

Product detailed description

The cylinder head screw with internal hexagon, also known as an Allen screw, is designed according to DIN 912, ISO 4762 and ČSN 021143 standards. This component is intended for fixed screw connections that require high preload, which increases the reliability and durability of the connection. The screw is suitable for assembly using an Allen key, which allows for efficient torque transmission and minimizes the risk of damage to the screw head.

The screw has a metric thread with a diameter of M4 and a pitch of 0.70 mm, which is standard for this size. The total length of the screw is 40 mm, while the thread length is 20 mm. The cylindrical head has a diameter of 7 mm and a height of 4 mm, while the width for the Allen key is 3 mm, which provides sufficient surface area for applying torque.

The screw material 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. This strength class is suitable for applications where higher mechanical properties are required. The screw is supplied without surface treatment, which means that it is blackened, and is therefore suitable for use in environments where it is not exposed to corrosive influences.

This type of screw is widely used in mechanical engineering and industry, where it is necessary to ensure a strong and reliable connection of components. It is ideal for applications where it is necessary to minimize space requirements while ensuring high joint strength.