Asimeto Plug Thread Gauge (D/E) - Metric - Right Hand - 6H - M20 x 1The Asimeto 682 Series plug gauge for metric threads is a precision tool built for engineers, machinists, and quality control professionals who need reliable verification of internal threads in metric fasteners. Designed for M20 x 1 right hand threads and the 6H tolerance class, it delivers accurate pitch diameter checks to ensure proper fit and consistent performance in manufacturing and maintenance tasks. Thread size: Metric M20 x 1, right hand