Self-drilling and self-tapping screw for screwing directly into sheet metal and metal laminates without a pilot hole. RECESS deep to ensure secure matching with the screwdriver. A deep recess, of a perfect shape, enables the same insert to be used for thousands of screwing operations. THREAD up to below the head, to allow the gripping of extremely thin sheets. TIP DRILLEX® self-drilling tip, which can penetrate thicknesses of up to 5 mm, threading and tightening consecutively. self-drilling self-tapping DRILLEX® screw The optimal drilling diameter is obtained directly by the screw, which then threads and screws consecutivel

CARBONITRIDING HEAT TREATMENT This confers two properties to the screw: - very hard surface, for biting into the fibres of the hardest wood; - tough, elastic core, needed to avoid breakage of screws. core hardness 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. DRILLING TEST All batches are tested with special instruments to determine their drilling rate...