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.
Self-tapping screws without a tip find particular application in pass-through positions, where the screw protrudes from the fixed plates and you want to avoid the risk of accidental injuries caused by the tip coming out. They are therefore accident-prevention in that they reduce the possibility of accidental cuts with the tip even during various maintenance operations.
Compared to the cross recess, the hexagonal head guarantees the possibility of applying a higher tightening torque without the risk of the insert coming out. It is particularly suitable for diameters from 4.8 upwards.
The length of the screw is measured from the tip to the underhead.
VITI AUTOFILETTANTI 2.9X25 TEFR S.PUNTA GREZZE
VITI AUTOFILETTANTI 3.5X8 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 3.5X9.5 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 3.9X9.5 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 4.2X9.5 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 4.2X13 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 4.2X19 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 4.8X9.5 TEFR S. PUNTA GREZZE
VITI AUTOFILETTANTI 4.8X9.5 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 4.8X9.5 TEFR S. PUNTA Z. NERE Cr.3
VITI AUTOFILETTANTI 4.8X13 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 4.8X16 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 4.8X19 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 4.8X38 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 5.5X9.5 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 5.5X13 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 5.5X16 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFIL. 5.5x 22 TEFR UNI 6950 - DIN 6928 SENZA PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 5.5X50 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 6.3X9 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 6.3X13 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 6.3X16 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 6.3X19 TEFR S. PUNTA ZINCATE Cr.3
VITI AUTOFILETTANTI 6.3X32 TEFR S. PUNTA ZINCATE Cr.3