Countersunk Allen screw DIN 7991 M6x20 stainless steel A4

Product detailed description

The DIN 7991 M6x20 Allen screw made of A4 stainless steel is designed for applications requiring a strong and reliable connection with a flat surface finish. This screw is manufactured according to the DIN 7991 standard, which is equivalent to ISO 10642 and ČSN 021144, and is characterized by a countersunk head with an internal hexagon, which allows it to be embedded in the material so that the screw head is flush with the surface of the material being joined.

The screw diameter is M6, which means that the outer diameter of the thread is 6 mm. The screw length is 20 mm, while the head height is 2.5 mm and the head diameter (dk) is 12 mm. The width of the internal hexagon is 4 mm, which allows the use of a standard Allen key for assembly. The screw has a metric thread with a pitch of 1.00 mm and a head angle of 90°, which is typical for countersunk screws.

The screw material is A4 grade stainless steel, which provides high corrosion resistance, which is ideal for use in environments with high humidity or in contact with chemicals. The screw has no additional surface treatment, which increases its corrosion resistance due to the natural properties of stainless steel.

This type of screw is suitable for metal and structural applications where it is necessary to ensure a strong connection with minimal protrusion above the surface. It is ideal for use in engineering, construction and equipment manufacturing where high strength and corrosion resistance are required.