Ok, I’ve understood.
TIP FOR METALSelf-perforating tip for iron and steel for thicknesses from 0.7 mm to 5.25 mm.
FINE THREADFine thread for fastening to sheet-metal substructures.
LIGHT CARPENTRYThe screw allows for very quick fastening to sheet metal and permits coupling of wood/metal in non-structural applications.
RAPID INSTALLATIONThe reduced screw size allows it to be used in small holes when coupled with other systems such as TERRALOCK for generic fastening to sheet metal or metal. Very quick fastening.