Screw cylindrical head - hex DIN 912 M20x90-8.8 galvanized

Product detailed description

The cylindrical head screw with internal hexagon, marked according to DIN 912, ISO 4762 and ČSN 021143 standards, is designed for applications requiring tight screw connections with high preload. This screw has a metric thread with a diameter of M20 and a total length of 90 mm. The thread has a pitch of 2.50 mm and the thread length is 52 mm, which allows sufficient hold in the material.

The screw head is cylindrical with internal hexagon, which allows assembly using an Allen key. The head diameter is 30 mm, the width B1 is 17 mm and the head height is 20 mm. The screw is made of steel with a strength class of 8.8, which means that it has a yield strength of 640 MPa and a tensile strength of 800 MPa, making it suitable for applications where high demands are placed on strength and durability.

The surface treatment is made with white zinc plating, which provides protection against corrosion and increases the service life of the component in harsh conditions. This screw is ideal for use in engineering, construction and other industries where high reliability and durability of joints are required.