General description Multiple uses for fitting a variety of hardware to frames where there is no steel or aluminium reinforcement present. Stainless steel should be used where there is a corrosive environment. Technical specifications Type: Countersunk with ribs Thread: Single thread Tip: Gimlet tip Material: Stainless steel Dimensions: 4.3 x 40 mm Usage Designed for fitting hardware to window frames, particularly in environments prone to corrosion.