SELF-DRILLING SCREW COMPRISING A SHANK, PRODUCED FROM CORROSION-RESISTANT STEEL, AND A HARD TIP JOINED THERETO

摘要

The invention relates to a self-drilling screw which is produced from hardened, alloyed carbon steel comprising an alloying additive and which has a hard tip. The hardness of the tip increases owing to the alloying additive when the screw is heated during hole formation and the resulting tempering.