The JBO Thread Plug Gauge (NoGo) in Metric Fine is a precision tool designed to verify internal threads in metric fine pitch, specifically for left-hand holes. Built for inspectors, machinists, and maintenance technicians, it helps ensure threaded holes meet the required maximum material condition with quick, confident pass/fail checks. Crafted for tough work environments, this gauge combines accuracy with durable construction to support reliable quality control across manufacturing and assembly workflows.

• Left-Hand Metric Fine NoGo design: Precisely calibrated for M48 x 3 LH threads, enabling quick NoGo checks to confirm threaded holes do not exceed the specified maximum size and to ensure consistent acceptance criteria.
• Durable hardened steel construction: Built to resist wear in busy shops, delivering long tool life and stable measurements even after repeated use in demanding inspection routines.
• Ergonomic, secure handling: Knurled, textured body and compact form provide a confident grip and smooth manipulation, helping maintain repeatable results across operators and shifts.

This NoGo gauge supports efficient quality control by delivering reliable measurements, reducing rework, and helping you maintain tight tolerances in metric fine-thread assemblies. Its robust materials and thoughtful design translate to faster, more consistent inspections and greater confidence in every threaded-hole check.