The JBO Thread Plug Gauge (GO) is a precision inspection tool designed to verify the internal threads of holes to exact metric standards. In metric fine size, right-hand configuration, this GO gauge checks holes against the M142 x 2 specification with a 6H tolerance, helping you confirm parts meet design requirements quickly and reliably.

Manufactured from hardened steel, the gauge delivers long-lasting performance in demanding shop environments. Its knurled, compact body provides a secure grip for accurate insertion, while its Go-side design makes it easy to identify a hole that is within spec—so quality control stays fast and consistent.

• Exact metric Go size for M142 x 2 (right-hand): Verifies internal threads to the precise metric fine size, so you can quickly confirm holes are within spec with consistent go/no-go results.
• Hardened steel construction: Built to resist wear and maintain accuracy through daily use, delivering durable performance in busy workshops and production lines.
• Ergonomic, knurled design: Easy to grip and align, even with gloves on, speeding up inspections and reducing handling errors.

Used as part of a regular quality control routine, this GO gauge helps reduce inspection time, minimize rework, and ensure thread holes meet the required standard every time. Its robust construction and straightforward go/no-go check deliver reliable results, support consistent assembly processes, and give you confidence when certifying components for production or service work.