Countersunk Allen screw DIN 7991 M4x45 stainless steel A2

Product detailed description

The countersunk head screw with internal hexagon according to DIN 7991, also corresponding to ISO 10642 and ČSN 021144, is designed for applications requiring a strong and reliable connection with a flat surface finish. This screw has a metric thread with a diameter of M4 and a length of 45 mm, with a thread pitch of 0.70 mm.

The screw head is countersunk, which means that after installation the surface of the joint is flat, without protruding parts. The head angle is 90°, which is standard for countersunk screws, and allows it to be completely embedded in the material. The head diameter (dk) is 8 mm, the head height (h) is 1.8 mm and the cone height (k) is 2.48 mm.

The internal hexagon, also known as the hexagon, has a width of 3 mm, which allows the use of a standard Allen key for assembly and disassembly. This type of groove provides high resistance to slippage when tightening.

The screw material is A2 grade stainless steel, which provides good corrosion resistance, making it ideal for outdoor and humid environments. The screw has no additional surface treatment, which is common for stainless steel components that are already inherently resistant to corrosion.

This screw is suitable for metal and structural applications where high strength and an aesthetic appearance of the connection are required. It is ideal for use in areas where corrosion resistance is important and where it is necessary to ensure a smooth surface without protrusions.