Customized non-standard thread plug gaugeAlso known asThread gauge. is a tool for measuring the accuracy of internal thread dimensions. This plug gauge can be divided into three types: ordinary 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.

　　 Customized non-standard thread plug gaugeInspection method: If the tested thread canThread stop gaugeIf the thread is screwed in and not completely screwed in with the thread stop gauge (the thread stop gauge only allows two sections of the tested thread to be screwed in, and the amount of screwing should not exceed two pitches), it indicates that the effective pitch diameter of the tested thread does not exceed the pitch diameter of its largest solid tooth shape, and a single pitch diameter does not exceed the pitch diameter of its smallest solid tooth shape. Therefore, the screwing and connection strength can be guaranteed, and the pitch diameter of the tested thread is qualified. Simply put, the pitch diameter of a thread is the nominal diameter of the thread, represented by the asterisk (*) in the thread. It is a diameter between the major diameter (external thread is the diameter of the tooth crest, internal thread is the diameter of the tooth base) and the minor diameter (opposite in meaning to the major diameter). The largest solid tooth profile, as the name suggests, is the tooth profile of a thread (don't tell me you don't even know what "tooth profile" is~) that can be achieved by manufacturing the largest solid object, that is, the maximum value that can be achieved in terms of volume and error range in actual processing and manufacturing compared to theoretical design. The maximum physical size of shaft components (external threads) is reflected in the diameter, which means that the shaft diameter is greater than the design size; The maximum physical size of the hole accumulation part (internal thread) is reflected in the diameter, which means that the diameter of the hole is smaller than the design size.