The JBO Thread Ring Gauge (GO) is a precision tool designed to quickly and reliably verify external threads on mechanical parts. This GO gauge targets metric fine pitch, right-hand threads, specifically M40 x 1, with a 4h tolerance class to ensure components meet exact specifications. Built as a GO-only standard for fast pass/fail checks, it helps inspectors and machinists confirm that threaded parts meet the required size and fit.

Manufactured from hardened steel, the gauge resists wear and maintains accurate dimensions through rigorous use in workshops, factories, or field service. Its user-friendly design supports easy identification of conforming threaded components, aiding quality-control workflows and precision engineering projects.

• Precise GO gauge for M40 x 1 threads: Quickly verify external thread diameter and pitch against the 4h tolerance, ensuring components meet exact specifications with minimal setup.
• Hardened steel construction for durability: Built to withstand daily use in harsh environments, resisting wear and maintaining accuracy over time.
• User-friendly design for fast quality checks: Clear handling and straightforward interpretation of results help identify conforming parts quickly, reducing inspection time and downtime.

This gauge helps streamline your inspection process by providing dependable, repeatable measurements that reduce rework and downtime. With durable materials and a compact, rugged design, it supports consistent results across multiple jobs—from routine maintenance to precision engineering assemblies—so you can trust your thread fittings and keep production moving smoothly.