The JBO Thread Plug Gauge (NoGo) - Metric Fine is a precision measuring tool designed for metric fine threads. Sized for M75 x 1.5 left-hand threads with a 6H tolerance, this NoGo plug gauge is ideal for quality control, machining, and assembly environments that require reliable hole-size verification. Made from hardened steel, it delivers durability and accurate, repeatable measurements in busy workshops.

Designed for busy shops, this gauge helps you quickly confirm that threaded holes meet the required maximum size for metric-fine LH threads, reducing rework and misfits. The hardened steel construction resists wear, delivering long-lasting performance even in demanding environments.

• NoGo metric fine thread verification (M75 x 1.5 LH): Quickly confirms that a hole does not exceed the maximum allowable size, supporting consistent quality and fast pass/fail decisions in inspection routines.
• Hardened steel construction: Delivers durable, wear‑resistant performance that holds its accuracy after repeated use in manufacturing settings.
• Left-hand thread specification with 6H tolerance: Ensures measurements align with LH threaded components and standard hole tolerances, reducing mix-ups in LH assemblies.

In practice, the JBO Thread Plug Gauge (NoGo) provides a reliable tool for fast, repeatable hole-size checks, helping ensure parts fit correctly and reducing downtime from rejected components. Its precise metric-fine sizing, durable construction, and LH-thread compatibility translate into smoother inspection workflows and greater confidence across manufacturing, quality control, and assembly tasks.