The JBO Thread Plug Gauge is a precision inspection tool designed for metric coarse threads. Specifically tuned for M22 x 2.5, right-hand threads and 6H tolerance, it helps ensure threaded holes meet exact standards in manufacturing, maintenance, and quality control.

Built with a durable hardened steel body and a textured, knurled grip, the gauge withstands daily shop use while delivering reliable go/no-go checks that quickly verify hole size and fitment.

• Go/No-Go quick inspection: One simple check determines whether the hole is within tolerance, speeding QA and reducing guesswork on the shop floor.
• Durable hardened steel construction: Designed for heavy use, this gauge resists wear and maintains accurate measurements through repeat testing.
• Perfectly matched to M22 x 2.5 coarse threads (6H): Ensures consistent, repeatable hole checks for standard metric assemblies and reliable part-fit verification.

With the JBO Thread Plug Gauge, you gain confidence in every assembly. The clear go/no-go results support faster decision-making, minimize rework, and help maintain production throughput. Its robust build and ergonomic design make everyday checks straightforward, reducing downtime and helping teams deliver consistent, quality results across jobs that require precise metric threading.