Thread plug ring gauge

Thread plug ring gauge is a tool for measuring the accuracy of internal thread dimensions. This plug gauge can be divided into three types: regular coarse thread, fine thread, and pipe thread. Thread plug gauges with a pitch of 0.35 millimeters or less and a second level accuracy or higher, as well as thread plug gauges with a pitch of 0.8 millimeters or less and a third level accuracy, do not have end gauges. Thread plug gauges below 100mm are taper shank thread plug gauges. A double threaded plug gauge with a diameter of over 100 millimeters.

Ring gauge, also known as calibration ring gauge, is a circular ring with specific dimensions and properties used to calibrate the deficiencies of measuring tools.

Ring gauge is a shaft gauge mainly used to measure shaft or other external dimensions with tolerance levels of 1T6 to 1T16. The environmental gauge cannot inspect parts and crankshafts that are machined directly, and its application scope is limited.

For checking whether the internal thread size of the workpiece is qualified. Each specification of thread plug gauge is divided into two types: through gauge (code T) and stop gauge (code stop), which can be supplied separately; Some are also made into integral units and supplied together. During inspection, the internal thread can only be judged as qualified if the through gauge can be screwed into the internal thread of the workpiece, while the stop gauge can only be screwed into the internal thread of the workpiece, and the amount of screwing does not exceed two pitches.