JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M19 x 1 Shrink Fit Holders 51 mm is a high-precision

51 mm is a high-precision finish tool designed to bring holes to a true

Designed for machinists and shops that demand consistent finishes

The uncoated finish minimizes built‑up edge and promotes reliable performance as temperatures rise

and precisely engineered geometry helps you finish mold and die projects faster

Right-hand orientation for predictable testing: The right-hand design delivers consistent engagement across components and operators

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M19 x 1 Shrink Fit Holders 51 mm is a high-precisionThe JBO Thread Ring Gauge (GO) Metric Fine is a precision tool for quickly and reliably verifying external threads on threaded components. It provides a straightforward GO gauge check to confirm M19 x 1 threads meet metric fine specifications, enabling accurate pass fail decisions during quality control. Designed for a wide audiencefrom engineers and inspectors to machinists, buyers, and hobbyiststhis GO gauge helps you identify properly conforming