Self-drilling and self-tapping screw for screwing directly into sheet metal and metal laminates without a pilot hole.
deep to ensure secure coupling with the screwdriver. A deep recess, of a perfect shape, enables the same bit to be used for thousands of screwing operations.
up to below the head, to allow the gripping of extremely thin sheets.
DRILLEX®self-drilling tip, which can penetrate thicknesses of up to 5 mm, threading and tightening consecutively.
CARBONITRIDING HEAT TREATMENT
More info: heat treatment
CHROMITING® GALVANIC TREATMENT
of an iridescent colour, it ensures much more effective protection against rust than all normal galvanizing treatments. Complies with the EN1670 standard grade 4.
More info: finishing treatments
The entire manufacturing process is subject to SPC (Statistical Product Control), which guarantees a constantly high level of quality in time.
The batch number on the labels ensure absolute traceability of all the production phases and related control/test documents.
All batches are tested with special instruments to determine their drilling rate in the various materials.