In engineering, 6H is a standard ISO metric thread tolerance class. A "6H Taper Lock" is a type of thread plug gauge used to verify internal thread accuracy.
A common type of triangular-headed cam lock used for electrical cabinets, elevators, and train doors. KhГіa tam giГЎc 6H
6H tolerance tools ensure that screws and nuts fit together with the correct amount of clearance for easy assembly without binding. In engineering, 6H is a standard ISO metric