Self tapping screw hexagon socket head

Thread and Pitch

Hex socket cylindrical head self-tapping screws are designed to create their own mating thread in the material during installation, eliminating the need for pre-threading or tapping operations. The self-tapping thread, extending along the shank, ensures effective penetration into metal materials, providing fast, precise, and stable fastening over time.
The pointed tip facilitates the initial penetration and proper alignment of the screw, improving installation accuracy. These screws are mainly used on sheet metal and metal laminates through simple drilling.
To ensure secure fastening, particular attention must be paid to the diameter of the drilled hole: a hole that is too small does not necessarily guarantee better holding strength and may compromise proper tightening. Drilling tables provide only indicative values, as the fastening performance must always be verified according to the specific mechanical and technical conditions of the application. Self-tapping screws are generally not recommended for die-cast materials or certain engineering plastics.

Head Type

The cylindrical head with hex socket (internal hex drive) allows the use of Allen keys or automated tools, ensuring precise tightening and efficient torque transmission. This design also offers reduced head protrusion compared to external hex head solutions, making it particularly suitable for technical applications or assemblies where operating space is limited. The wide and uniform bearing surface helps distribute the clamping load evenly during tightening.