Truthread Thread Ring Gauge (NoGo) - UNC - Right Hand - 2A - No.12x24 ISO Insert - TC Style then progress with the second

then progress with the second (plug) lead

well-defined corners that produce consistent surface finish and tight dimensional control across passes

and technicians who need dependable performance across a variety of tasks—from prototype work to production drilling

minimizing the risk of cross-threading and ensuring a reliable entry into the hole from the very first rotation

Thread size and pitch: M39 × 1

Truthread Thread Ring Gauge (NoGo) - UNC - Right Hand - 2A - No.12x24 ISO Insert - TC Style then progress with the secondThe Truthread Thread Ring Gauge (NoGo) is a precision tool designed for UNC (Unified National Coarse) righthand threads in the No. 12x24 size. Calibrated to ensure the thread is within tolerance, this NoGo gauge specifically checks the minimum material condition to confirm the part stays within the lower size limit, making it ideal for verifying threaded components that should not be larger than the maximum allowable size. Its compact ring design