The screw in the piglet's bag is loose. What about the screw driver?
Thread and thread are in inches. Thread tooth angle is 60 degrees, and the thread tooth angle of 55 degrees. Because of the difference of measurement units, the methods of expressing various threads are not the same.
1, M3 screws with 5.5mm screwdriver. 2 metric thread is MM (mm) as a unit, its teeth sharp angle of 60 degrees.
