JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M21 x 1.5 4 Month Widin minimizing vibration and keeping cuts

minimizing vibration and keeping cuts smooth and accurate

With the ability to tailor cutting length and taper angle for every diameter

repeatable slots with a quality finish

enabling quick tool changes without swapping holders or reworking setups

Straight shank in HSS-E (M35 cobalt): Rigid

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M21 x 1.5 4 Month Widin minimizing vibration and keeping cutsThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. Its ideal for machinists, quality inspectors, and assembly teams that require consistent hole sizes and accurate thread engagement. Built to streamline go no go checks, it helps you confirm fit quickly without guesswork. With a Go No Go design, you can perform fast pass fail assessments of threaded holes, speeding up setup and reducing inspection time. The