Countersunk Allen screw DIN 7991 M3x12 stainless steel A4

Product detailed description

The DIN 7991 M3x12 Allen countersunk screw is made of A4 grade stainless steel, which guarantees high corrosion resistance, which is ideal for applications in aggressive environments, such as the chemical industry or marine environments. This screw has a metric thread with a diameter of M3 and a length of 12 mm, with a thread pitch of 0.50 mm.

The screw head is countersunk, which means that after installation it is flush with the surface of the material, thus achieving an aesthetic and functional appearance of the joint. The head angle is 90°, which is the standard angle for countersunk heads, and allows for a precise and firm seat in the material. 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 screw is equipped with an internal hexagon (hexagon), which requires the use of a 2 mm Allen key for assembly. This type of groove allows for efficient torque transmission and minimizes the risk of head damage when tightening.

The DIN 7991 standard, which is equivalent to ISO 10642 and ČSN 021144, ensures that the screw meets all required technical specifications and quality standards. No surface treatment is applied, which is common for stainless steel screws, in order to maintain their natural corrosion resistance.

This screw is ideal for metal and structural applications where a strong and reliable connection with a flat surface finish is required.