通り側ねじプラグゲージとは | オーエスジー

This is a external thread -shaped gauge that inspects the total effective diameter of internal thread .
If it passes through, it will pass in that the effective diameter is not too small, and the screw accuracy is guaranteed by inspecting and passing it as a set with the stop screw plug gauge.
In addition to the effective diameter, the tolerance of the half-width of the mountain and the tolerance of the pitch are also determined.