Countersunk screw with groove DIN 963 M4x25 galvanized

Product detailed description

The DIN 963 countersunk slotted screw, size M4x25, is made of steel of strength class 4.8, which guarantees sufficient strength for common applications. The screw has a metric thread with a pitch of 0.70 mm, which is led all the way to the head, which allows a strong and precise connection. The screw head is countersunk, which means that after installation it is flush with the surface of the material, which achieves an aesthetic appearance and minimizes the risk of snagging.

The groove on the head is continuous, which allows the use of a standard flat screwdriver for assembly. The head diameter (dk) is 7.5 mm, the head height (k) is 2.2 mm and the groove width (s) is 1 mm. These dimensions are optimized for efficient transmission of forces during tightening.

The surface treatment is white zinc plating, which provides protection against corrosion and increases the life of the screw in environments with higher humidity or chemical exposure. The length of the screw is 25 mm, which makes it suitable for use in applications where it is necessary to connect thinner materials or components with limited thread depth.

This screw is suitable for use in metal and plastic parts where an aesthetic and flush joint is required. It is ideal for applications where precision and reliability of the joint are important, such as electronic devices, fine mechanics or decorative elements. The screw complies with ISO 2009 and ČSN 021151 standards, which guarantees its compatibility and standardized quality.