Hexalobular (6 Lobe) socket flat head countersunk screws, ISO 14581

Socket flat head countersunk screws, Torx head.

d1M2M2,5M3M4M5M6M8
d2 max3.84.75.58.49.311.315.8
k max1.21.51.652.72.73.34.65
t max0.640.790.831.531.511.782.54
A ~1.752.42.83.954.55.66.8
Bit No.T6T8T10T20T25T30T45