Stainless Steel Torx Button Flange A2-70 Stainless Steel DIN 7380-2 d dk(max) k s (torx drive) e M4 2.2mm 20 9.4mm M5 9.5mm 2.8mm 25 11.6mm M6 10.5mm 3.3mm 30 13.6mm M8 14mm 4.4mm 40 17.8mm