Countersunk Allen screw DIN 7991 M8x20-8.8 galvanized

Product detailed description

The DIN 7991 M8x20-8.8 zinc-plated countersunk head screw is a structural element designed for applications requiring a solid and reliable connection to a flat surface. This type of screw is characterized by a countersunk head with an internal hexagon, which allows it to be embedded in the material so that it does not protrude above the surface, thus achieving an aesthetic and functional appearance of the connection.

The screw has a metric M8 thread with a length of 20 mm and a pitch of 1.25 mm. The screw head has a countersunk shape with an angle of 90°, which is standard for this type of fastener. The head diameter (dk) is 16 mm, the head height (h) is 3.5 mm and the width of the internal hexagon (s) is 5 mm. The height of the conical part (k) is 4.9 mm, which ensures optimal embedment in the material.

The screw is made of steel of strength class 8.8, which means that it has high tensile strength and is suitable for demanding mechanical applications. The zinc coating provides protection against corrosion, which extends the life of the screw even in more demanding conditions.

This screw meets the standards DIN 7991, ISO 10642 and ČSN 021144, which guarantees its compatibility and standardization for use in international projects. It is ideal for metal and structural applications where it is necessary to ensure a strong and aesthetically clean connection.