The JBO Thread Plug Gauge (NoGo) in Metric Fine LH is a precision inspection tool designed to verify the size of left-hand threaded holes to exacting standards. Built for engineers, machinists, quality teams, and maintenance crews, it helps you quickly determine whether a hole meets the 6H tolerance for M82 x 1.5 threads, ensuring consistent parts and reliable assembly.

• Precise NoGo verification for metric fine LH threads: Tailored to M82 x 1.5 with 6H tolerance, this gauge quickly confirms the hole does not exceed the upper limit, enabling fast, confident pass/fail checks during production and inspection.
• Left-hand thread compatibility: Specifically designed to inspect left-handed threaded holes, reducing guesswork and ensuring accurate measurements in applications that rely on reverse-threaded components.
• Rugged, user-friendly construction: Hardened steel offers long wear life, while the knurled handle provides a secure grip for precise alignment and smooth operation in busy shops, even with oil or debris present.

This NoGo metric fine plug gauge supports streamlined quality control by delivering repeatable, reliable results that minimize rework and sampling risk. It’s ideal for machine shops, contract manufacturers, repair and maintenance teams, and QC laboratories seeking a durable, easy-to-use tool to uphold tight threading standards and documentation confidence.