Self-tapping screws are mainly used for screwing on metal sheets and laminates through simple drilling, without threading or tapping operations. These screws are not particularly suitable for use on die-cast materials and plastic materials. For a safe and stable screwing, particular attention must be paid to the diameter of the hole to be drilled. A small hole in which the screw "forces" to enter is certainly not synonymous with greater guarantee in fixing. It should also be remembered that the existing tables are empirical and only give an indication of perforation, but they are not a certain rule, as the fixing must be checked from time to time according to the technical-mechanical conditions of the particular that will be tighten.

The use of Torx allows to transmit a higher tightening torque than other impressions. It is a universal type of impression, unlike the specific ones that are used in the various countries of the world (cross, philips, pozi, slotted, square impressions and so on). Torx is particularly suitable for diameters from 4 upwards; applying it on smaller diameters is not particularly recommended as the reduced depth of the impression with respect to a cross can create problems during assembly. Precisely for this reason, if they are not perfectly mounted in axis with the holes and with the screwdriver, the insert could escape from the screw seat.

The screw is measured from the head included to the tip.

Code Description Availability Certifications Request offer
012TX.29130ZN VITI AUTOFIL. 2.9X13 TS TORX T 10 ISO 14586 ZINCATE Cr.3 623500.0
012TX.42160GR VITI AUTOFIL. 4.2X16 TS TORX T 20 ISO 14586 GREZZE 0.0
012TX.48160ZN VITI AUTOFIL. 4.8X16 TS TORX T25 DIN 7982 - UNI 6955 ZINCATE Cr.3 0.0
012TX.55250ZN VITI AUTOFIL. 5.5X25 TS TORX T 25 ISO 14586 ZINCATE Cr.3 7425.0