The JBO Thread Plug Gauge (NoGo) - Metric Fine is a precision inspection tool designed to verify internal metric fine threads. It helps technicians, machinists, and quality-control teams quickly determine whether threaded holes meet exact size and tolerance requirements, supporting reliable assemblies and consistent performance across a range of projects.

Crafted for durability in busy workshops, this gauge features hardened steel construction and a textured knurl for a secure grip. It’s the Left Hand variant, sized M72 x 2 with a 6H tolerance class, and the NoGo design helps you identify holes that are out of spec at a glance, reducing rework and downtime.

• Precise NoGo metric fine thread validation: Quick, confident verification of M72 x 2 left-hand threaded holes to 6H tolerance, reducing inspection time and avoiding undersize/oversize parts.
• Left-hand thread compatibility: Specifically engineered to check left-handed thread holes, preventing mix-ups and ensuring correct assembly quality in specialized applications.
• Durable hardened steel with secure grip: Built for demanding environments; rugged construction with knurled surface and smooth operation for long service life and repeatable results.

This gauge streamlines your quality-control workflow by delivering reliable pass/fail results for each hole, helping you cut downtime, minimize rework, and maintain consistent thread quality across production runs. With the JBO Metric Fine NoGo gauge, you can trust your thread measurements and ensure parts meet required specifications before assembly.