The JBO Thread Plug Gauge (GO) – Metric Fine is a precision inspection tool designed to verify threaded holes in machined parts and assemblies. It enables quick, go/no-go checks to confirm internal threads meet the required specifications.

Designed for right-hand threads and sized M105 x 3 with 6H tolerance, this gauge is forged from hardened steel for durability in busy workshops and production lines. The robust construction resists wear, helping maintain accurate measurements through heavy use in demanding environments.

• Go gauge for rapid hole verification: Quickly confirms whether a threaded hole accepts the GO gauge, enabling fast pass/fail decisions and reducing inspection time on the shop floor.
• Hardened steel construction for long tool life: Built to withstand daily use in demanding environments, resisting wear to keep measurements accurate over thousands of checks.
• Metric Fine, right-hand fit (M105 x 3, 6H): Precisely matched to fine-pitch metric threads in the correct orientation, delivering reliable results for a wide range of components.

With the JBO Thread Plug Gauge (GO), your team gains faster, more consistent inspections, reduces guesswork when verifying threaded holes, and strengthens quality control across manufacturing and assembly processes. Its durable build minimizes downtime due to tool wear, while clear, straightforward GO sizing supports efficient workflows for engineers, machinists, and inspectors alike.