Stainless steel countersunk self tapping screws from our high performance multi purpose self tapping screw range, designed to drill and tap their own hole as they are screwed into wood, plastic or thin to medium gauge steel creating their own precisely fitted threads.Smooth under head countersink for flush finishing in door furniture, bracketry and general construction and engineering components. PH2 driver and manufactured from 316 marine grade stainless steel for premium corrosion protection.