The stainless steel screw for best anti-corrosion protection and external applications.|Specially-formulated nylon allows best performance installation for use in all base material categories according to ETAG 020 (A, B, C, D)|The countersunk plug for flush fixing of soft material (eg. timber)|Internal plug geometry designed to fit the screw head|Embedment depth markings facilitate precise installation|The delta tone countersunk screw (with T40 recess) provides flush finish in the fixture