While using Master Metrology - 3mm dia, 0.50mm Class 6G Metric Thread Ring Gauge user needs first to try one end and if it does not fit, then try the other one. The 3mm dia, 0.50mm Class 6G Metric Thread Ring Gauge has hardened steel thread plug gauges (Go + NoGo) and thread ring gauges (Go or NoGo) for metric screw thread (ISO) with pitch 0.5. Class 6G Metric Thread Ring Gauge belongs to the class 6 G category. Thread Ring Gauge uses Metric plug type thread. The Gauge has a pitch size of 0.05 mm. The 0.50mm Class 6G Metric Thread Ring Gauge is a right-handed tool with a 3 mm diameter.
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