JBO Thread Plug Gauge is a precision tool designed to verify metric fine threads. It’s ideal for machinists, quality inspectors, and assembly technicians who need fast, accurate hole checks for components that require a precise fit. This gauge supports M24 x 2 right-hand threads with 4H tolerance, making it a reliable choice for demanding production and maintenance environments.

Built from hardened steel, this Go/No-Go gauge delivers durable, repeatable performance. The Go/No-Go design lets you perform quick, clear checks: the Go plug should thread into the hole if it’s within tolerance, while the No-Go plug should not fit if the hole is too tight or too loose—helping you confirm a correct fit before assembly.

• Metric Fine Thread Validation: Specifically engineered for metric fine threads, ensuring accurate checks for critical hole sizes such as M24 x 2 in precision applications.
• Go/No-Go Quick Verification: Two-step inspection that confirms both minimum and maximum limits in seconds, reducing guesswork and downtime in production QC.
• Durable Hardened Steel Construction: Built to resist wear in busy workshop environments, delivering long-lasting accuracy and reliability through high-volume use.

Using the JBO Thread Plug Gauge helps streamline threaded-hole verification, reduce rework, and improve overall assembly quality. Its rugged build and clear pass/fail signals support faster decisions, tighter tolerances, and more dependable performance across manufacturing, maintenance, and repair tasks.