The JBO Thread Ring Gauge (NoGo) – Metric Fine is a precision inspection tool designed to verify external threads on fasteners, fittings, and machined parts. It helps teams in manufacturing, maintenance, and quality control ensure that thread diameters and form meet exact specifications with confidence.

Built for reliability in busy environments, this gauge is tuned for M28 x 1 threads with a right-hand orientation and a 4h tolerance class. Crafted from hardened steel, it resists wear and maintains measurement accuracy through repeated use and demanding workconditions.

• NoGo verification for M28 x 1 metric fine threads: Quickly confirm that external threads meet the upper tolerance limit, making non-conforming parts obvious and speeding up rejects without guesswork.
• Durable hardened steel construction: Designed for long service life in workshop and production settings, resisting wear and retaining precise dimensions over time.
• User-friendly inspection workflow: Clear, repeatable checks support fast, reliable quality control, reducing downtime and improving first-pass conformance on threaded components.

This gauge helps you streamline quality control, minimize rework, and ensure consistent results across parts and suppliers. By providing a straightforward Go/NoGo assessment for metric fine threads, it supports accurate, repeatable measurements that you can trust on every inspection.