The JBO Thread Plug Gauge (NoGo) is a precision tool designed to verify metric fine internal threads in holes. This left‑hand gauge is sized for M75 x 2 with a 6H tolerance, making it ideal for quality control, machining, and assembly environments that require accurate LH thread inspection.

Manufactured from hardened steel and featuring a knurled body for a secure grip, the gauge resists wear in busy workshops and delivers durable, long‑lasting performance even with frequent use.

• Left-Hand Thread Design: Engineered for left‑hand metric fine holes (LH threads including M75 x 2) to ensure precise NoGo checks and correct orientation during inspection.
• NoGo Precision for Quick Acceptance Testing: Enables fast, reliable confirmation of out‑of‑spec holes, helping you make clear go/no‑go decisions and reduce inspection time.
• Hardened Steel Construction: Built to endure daily use with excellent wear resistance, while the knurled surface provides a secure, slip‑free grip for accurate handling.

Use this gauge to streamline quality control, minimize rework, and ensure threaded holes meet the required 6H tolerance for metric fine LH threads. Its robust construction and precise sizing give you confidence in every measurement, whether you’re in a production line, workshop, or maintenance environment.