The JBO Thread Ring Gauge (GO) is a precision instrument designed for go/no-go evaluation of external trapezoidal threads. Sized for right-hand, 7e class threads (28 x 5), it empowers shops across manufacturing, automotive, and mechanical engineering to verify that threaded components meet exact diameter specifications during routine inspection and quality control.

Crafted from hardened steel for exceptional wear resistance, this ring gauge delivers durable, long-lasting performance in busy workshop environments. Its user-friendly, straightforward design makes it easy to identify conforming parts at a glance, speeding up inspections and reducing guesswork.

• Fast Go/No-Go verification: Quickly confirm whether a part’s external trapezoidal thread diameter matches the specified tolerance, speeding up quality checks and reducing rework.
• Hardened steel, wear-resistant construction: Built to withstand daily use in demanding environments, delivering long service life and stable measurements over many cycles.
• User-friendly trapezoidal right-hand design: Clear visual cues and a comfortable knurled exterior help you identify compliant parts with confidence during inspection.

With the JBO GO Thread Ring Gauge, you gain reliable, repeatable measurements that support consistent quality, faster decision-making on the shop floor, and a smoother overall inspection workflow. Its durable build minimizes downtime from tool wear, while its precise dimensions keep your threaded assemblies in-spec, every time.