Asimeto Plug Thread Gauge (D/E) - Metric - Right Hand - 6H - M42 x 2The Asimeto 682 Series Plug Thread Gauge is a precision tool designed for engineers and quality teams who need quick, reliable verification of metric internal threads. Built for right hand M42 x 2 threads with a strict 6H tolerance, it delivers dependable pitch diameter checks in a compact, easy to use form. Series and purpose: 682 Series plug gauge for metric fine threads, crafted for accurate internal thread verification. Thread size and tolerance: