PMJ-tec bi-metal stainless steel fasteners for composite panel wall systems 7571 5.5 x length16 Washer Application / Fastener range Substrate< 2 x 1.2mm1.2 – 3.5mm1.5 – 6.0mm4.0 – 12.5mm Panel fix 7571 75707575Internal flashing 71407550Panel bearer 751075207530