The JBO Thread Plug Gauge (NoGo) – Metric Fine is a precision inspection tool designed to verify internal threads in metric fine pitches. Specifically sized for M80 x 1.5 threads with a 6H tolerance and a left-hand configuration, it helps machinists, inspectors, and assembly teams quickly confirm hole readiness and ensure reliable mating with components.

• NoGo precision verification for M80 x 1.5 threads: Quickly confirms the internal thread hole does not exceed the maximum material condition, helping prevent mis-taps and assembly issues.
• Left-hand thread design: Specifically configured for left-handed applications, ensuring correct inspection orientation and reducing setup errors.
• Hardened steel construction for durability: Withstands daily use in busy shops, maintaining accuracy and delivering long service life.

Designed for busy workshops, this gauge combines a secure, ergonomic knurled grip with robust materials to provide consistent, repeatable measurements. The hardened steel body resists wear through frequent use, while the precise machining ensures reliable results across countless inspections.