Thread Tap Drill Bit (M2×0.4)

Standard M2×P0.4 thread.Tapping tips:First drill a 1.6mm diameter hole at the position to be tapped. Then tap the thread.If encounter a hole that is difficult to tap (such as a hard material), please tap a few threads and then back a little and then continue to tap, repeatedly and slowly to complete it. If necessary, you can apply lubricant to the hole being tapped...