The JBO Thread Plug Gauge is a precision tool for verifying metric fine internal threads. Designed for engineers, machinists, and assembly teams, it performs fast Go/No-Go checks on M25 x 0.75 threads with right-hand orientation and 6H tolerance to ensure parts fit cleanly and consistently.

• Go/No-Go design for metric fine threads: Quickly confirm hole threads meet spec with a simple pass/fail check, reducing inspection time and ensuring reliable mating results.
• Hardened steel construction for lasting accuracy: Built to withstand daily use, resist wear, and maintain precise measurements across dozens of inspections.
• Right-hand orientation with a knurled grip: Easy to handle in tight spaces, ensuring stable alignment during insertion for dependable checks.

Used in incoming inspections, in-process checks, and final assembly, the JBO Thread Plug Gauge helps you pinpoint thread issues before they impact performance. Its durable build and precise Go/No-Go functionality support faster workflows, lower rework rates, and consistent, trustworthy results across production runs.