Screw cylindrical head - hex DIN 912 M4x8-12.9

Product detailed description

The cylinder head screw with internal hexagon, also known as the Allen screw, is manufactured according to DIN 912, ISO 4762 and ČSN 021143 standards. This component is intended for use in fixed screw connections that require high preload, thus ensuring a reliable and durable connection. The screw is optimized for assembly using an Allen key, which allows for efficient torque transmission.

The screw has a metric thread with a diameter of M4 and a pitch of 0.70 mm. The total thread length is 8 mm. The cylinder head has a diameter of 7 mm and a height of 4 mm, while the width for the Allen key is 3 mm. The screw is made of steel with a strength class of 12.9, which means that it has a very high tensile strength, namely at least 1220 MPa. This material is suitable for applications where high strength and resistance to mechanical stress are required.

The surface of the screw is untreated, which means that it is not covered with any protective coating, but it can be blackened to increase corrosion resistance. The screw is ideal for use in mechanical engineering, construction and wherever high demands are placed on the strength and reliability of connections.