Screw cylindrical head - groove DIN 84 M3x40 galvanized

Product detailed description

The DIN 84 standard cylindrical head screw with a straight groove, also corresponding to ISO 1207 and ČSN 021131, is designed for precision assemblies in mechanical and electrical engineering, where a clean and solid connection is required. This screw has a metric thread with a diameter of M3 and a length of 40 mm, with a thread pitch of 0.50 mm. The cylindrical head has a diameter of 5.5 mm and a height of 2 mm, with a continuous groove of 0.8 mm width, which allows easy tightening and loosening using a standard flat screwdriver.

The screw material is steel with a strength class of 4.8, which means that it has a yield strength of 320 MPa and a tensile strength of 400 MPa. The surface treatment is white zinc plating, which provides increased corrosion resistance and improves the aesthetic appearance of the component. This finish is particularly suitable for applications where the screw is exposed to moisture or other corrosive conditions.

The screw is ideal for use in applications where high precision and reliability of the connection are required, such as fine mechanisms, electronic devices or precision engineering structures. Thanks to its technical parameters and finish, it is suitable for a wide range of industrial applications.