and durable Thread Plug Gauges are available for checking an internal threaded
hole. They are developed for checking the full functional fit of the thread
with high efficacy. They are designed using high-grade raw materials to provide
accurate results of testing whether the threads on externally threaded parts or
internally threaded parts (nuts and tapped holes). These Thread Plug Gauges are
widely used for accurately determining the correctness and precision of the
thread's lead, pitch and angle.