Using the JBO Thread Plug Gauge helps you speed up hole verification
delivering controlled chip flow and a reliable cut every time
Left-Hand Spiral Flute with Right-Hand Cutting: Optimizes chip control and surface finish
Each unit is built to order
enabling reliable clamping in CNC or manual machines and across various tooling systems
JBO Thread Plug Gauge (GO) - Metric Fine - Left Hand - 6H - M70 x 2 Boring Bar Blank Using the JBO Thread PlugThe JBO Thread Plug Gauge (GO) Metric Fine, Left Hand, 6H, M70 x 2 is a precision inspection tool designed to quickly verify threaded holes to metric fine standards. Its ideal for machinists, quality control teams, and engineers who need reliable hole validation during tapping, assembly, or maintenance. This GO gauge helps confirm that holes are tapped to the correct size, ensuring parts fit as intended. Crafted from hardened steel, the gauge delivers