Countersunk Allen screw DIN 7991 M5x55 stainless steel A4

Product detailed description

The DIN 7991 hexagon socket countersunk head screw, size M5x55, made of A4 stainless steel, is designed for applications requiring precise fit and high preload. This screw has a metric thread with partial threading, where the thread length is 22 mm and the thread pitch is 0.80 mm. The total length of the screw is 55 mm, while the thread diameter is M5.

The screw head is countersunk, which means that after installation it is flush with the surface of the material into which it is fastened, thus achieving an aesthetic and functional appearance without protruding parts. The head height is 2.3 mm and its diameter is 10 mm, while the angle of the countersunk head is 90 degrees, which is the standard angle for this type of screw. The internal hexagon, which is used to tighten the screw, has a width of 3 mm.

The A4 stainless steel material provides high corrosion resistance, which is ideal for use in aggressive environments, including marine environments. The screw has no additional surface treatment, which is common for stainless steel materials due to their natural resistance to corrosion. This screw is suitable for use in engineering, construction and other industries where a reliable and durable connection is required.