Flat set screw - hex DIN 913 M4x20

Product detailed description

The flat set screw with internal hexagon M4x20 is manufactured according to DIN 913, which is equivalent to ISO 4026 and ČSN 021187. This component is designed to lock parts without damaging the seating surface, which is achieved thanks to the flat end of the screw. The internal hexagon, also known as an inbus, allows for efficient torque transmission during assembly and disassembly using a hex key.

The screw has a metric thread with a diameter of M4 and a pitch of 0.70 mm. The total length of the screw is 20 mm, while the head diameter is 2.5 mm and the B1 width is 2 mm. The screw material is 45H grade steel, which provides high strength and resistance to mechanical stress. The screw is supplied without surface treatment, which is suitable for applications where increased corrosion resistance is not required.

This screw is ideal for use in situations where it is necessary to ensure a firm connection without damaging the surface, for example when adjusting the position of machine components or in precision mechanics. It is part of the set screw group and is often used in industrial applications where accuracy and reliability of the connection are important.