Countersunk Allen screw DIN 7991 M3x20 stainless steel A2

Product detailed description

The DIN 7991 M3x20 Allen screw made of A2 stainless steel is designed for applications requiring a strong and reliable connection with a flat surface finish. This screw is manufactured according to DIN 7991, which is equivalent to ISO 10642 and ČSN 021144. Its design includes a countersunk head with an internal hexagon, which allows for effective embedding into the material and creates a smooth surface without protruding parts.

The screw has a metric M3 thread with a length of 20 mm and a pitch of 0.50 mm. The head diameter (dk) is 6 mm, the head height (h) is 1.2 mm and the cone height (k) is 1.86 mm. The width of the internal hexagon (s) is 2 mm, which allows the use of a standard Allen key for assembly and disassembly. The angle of the countersunk head is 90°, which is the standard angle for this type of screw, ensuring optimal distribution of forces during tightening.

The screw material is A2 grade stainless steel, which provides excellent corrosion resistance, making it suitable for use in a variety of environments, including outdoor and humid conditions. The screw has no additional surface treatment, which is common for stainless steel components that naturally resist corrosion.

This screw is ideal for metal and structural applications where an aesthetic appearance and a solid connection without protruding parts are required. It is suitable for use in engineering, construction and other industries where reliability and durability of connections are important.