The JBO Thread Plug Gauge is a precision tool designed for metric fine threaded holes. Specifically sized for M17 x 0.75 right-hand threads in 6H tolerance, it’s ideal for machinists, inspectors, and assembly teams who need fast, reliable checks during machining or quality control.

Its Go/No-Go design lets you quickly verify whether a hole accepts the part without guesswork, reducing inspection time and preventing costly misfits. The gauge features a hardened steel body with a textured knurl for a secure grip, so it stays accurate through repeated use in busy workshops.

• Go/No-Go Quick Checks: Quickly determine pass/fail status for hole threads, speeding inspections and reducing guesswork.
• Rugged Hardened Steel with Knurled Body: Built to endure daily shop floor use, resist wear, and provide a secure grip even with gloves.
• Precise Metric Fine Thread Specification (M17 x 0.75, 6H, Right Hand): Ensures accurate, repeatable checks aligned with standard metric components for reliable fits.

Using this gauge streamlines your workflow by delivering fast, accurate threading verification that reduces downtime and rework. The combination of Go/No-Go simplicity, durable construction, and precise metric sizing helps you maintain consistent part quality across batches, minimize guesswork, and improve overall production reliability.