The JBO Thread Plug Gauge is a left-hand, metric coarse Go/No-Go plug gauge designed to verify M16 x 2 threaded holes. This compact tool helps ensure parts thread in cleanly and assemble reliably, reducing trial-and-error fitting in production or maintenance tasks.

Built for daily use in workshop environments, the gauge is made from hardened steel to resist wear and keep its accuracy over many inspections. The Go/No-Go design provides a fast, objective check of hole size and fit, helping you identify improper threads or out-of-tolerance holes before costly assemblies proceed.

• Go/No-Go Quick Checks: Enables fast, pass/fail verification of M16 x 2 coarse-thread holes, speeding quality control and minimizing guesswork during assembly.
• Hardened Steel Construction: Delivers durability and long life in busy shop environments, maintaining accuracy through repeated use.
• Left-Hand Version for Left-Hand Threads: Specifically designed to inspect left-hand threaded components, ensuring correct matching and reliable results.

Using the JBO Thread Plug Gauge streamlines your workflow by delivering repeatable, trustworthy results. It helps you confirm proper thread engagement within the 6H hole tolerance, reduces downtime from misfits, and supports consistent performance across production runs and maintenance projects.