Asimeto Plug Thread Gauge (D/E) - Metric - Right Hand - 6H - M18 x 2The Asimeto Plug Thread Gauge (D E) is a precision metric gauge designed for engineers, machinists, and quality teams who need to verify internal threads on metric fine fasteners. Part of the 682 Series, it targets M18 x 2 right hand threads with the 6H tolerance for accurate pitch diameter verification. Series: 682 Series plug gauge for metric internal threads Thread Size and Type: Metric, right hand thread, M18 x 2 Tolerance Class: Conforms to 6H