Asimeto Plug Thread Gauge (D/E) - Metric - Right Hand - 6H - M30 x 1The Asimeto Plug Thread Gauge, part of the 682 Series, is a precision tool designed for engineers, machinists, and quality control teams who need reliable verification of metric internal threads. Sized for M30 x 1 right hand threads and manufactured to 6H tolerance, it delivers quick, repeatable go no go checks on fine fasteners. Series: 682 Series plug gauge for metric internal threads Thread ends: Dual ends with external M30 x 1 threads for accurate