The JBO Thread Ring Gauge (NoGo) is a precision tool for verifying external metric coarse threads. Designed for inspectors, machinists, and quality teams, it delivers a reliable NoGo limit for M20 x 2.5 right-hand threads with a 4h tolerance to ensure components meet the standard at a glance.

• Precise NoGo limit for M20 x 2.5 coarse threads: Quickly confirms that external threads stay within the specified maximum, supporting fast pass/fail decisions during inspection.
• Hardened steel construction for durability: Built to resist wear and maintain accuracy through daily use in busy shops, reducing the need for frequent recalibration or replacement.
• User-friendly, quick-inspection design: Simple orientation and clear cues enable rapid checks, minimize setup time, and improve workflow on the production floor.

Using the JBO Thread Ring Gauge (NoGo) helps you enforce consistent thread quality across batches, cut rework and downtime, and accelerate mating with fasteners and fittings that rely on M20 x 2.5 coarse threads. With durable construction and a straightforward inspection process, you can trust your measurements and keep production moving with confidence.