1. Pre-tapping pin formulated using authentication bottomed size (the size of a pin 3.24-3.42mm); <br>2.M4-6H compliance verification threaded through threaded stopper (before plating); <br>3. screw mating with client authentication after plating gap.
1. Before tapping, verify the size of the bottom hole with the pin (pin size 3.24-3.42mm);<br>2. M4-6h thread gauge to verify thread through (before electroplating);<br>3. Use customer's screws to verify the fit clearance after plating.