Back (Fe-Base)

Torx screw A2

Chemical designationTorx-Schraube A2
EtchingV2A-Beize @ 70 °C

Austenitic stainless steel with deformation martensite in the heavily deformed head (310 HV 0.3 compared to 150 HV 0.3 in shaft center) and thread. Material overlappings in the groove of the thread.