Self-drilling and self-tapping screw for screwing directly into sheet metal and metal laminates without a pilot hole.
deep to ensure secure matching with the screwdriver. A deep recess, of a perfect shape, enables he same insert 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® PROTECTIVE TREATMENT
of an iridescent colour, it ensures a salt spray corrosion resistance of 240 hrs. Compliance with grade 4 of EN 1670 standard.
More info: finishing treatments
IN PROCESS CONTROLS
The entire manufacturing process is subjected to SPC (Statistical Product Control), which guarantees a constantly high level of quality in time.
The batch number on the labels ensures absolute traceability of all the phases of production and related control/test documents.
all batches are tested with special instruments to determine their drilling rate in the various materials.