The JBO Thread Ring Gauge (GO) is a precision inspection tool designed to verify metric coarse threads, specifically for left-hand M36 x 4 connections. It’s ideal for engineers, machinists, inspectors, and quality teams across manufacturing, machining, and assembly environments. This GO gauge helps you quickly confirm external thread diameters meet exact specifications, supporting reliable fitment in critical assemblies.

Constructed from hardened steel, this GO ring gauge offers exceptional durability and wear resistance for busy shop floors. Its meticulous construction and precise dimensions ensure accurate go/no-go checks, helping your team uphold industry standards and deliver consistently reliable threaded connections.

• Durable hardened steel construction: Built to resist wear and maintain accuracy during repeated use, extending tool life in demanding inspection environments.
• Precise metric coarse M36 x 4 left-hand threads: Specifically matched to the M36 x 4 left-hand coarse standard, enabling reliable go/no-go verification and consistent results.
• User-friendly GO gauge design for quick checks: Simple handling and smooth engagement speed up inspections while preserving measurement reliability.

By providing fast, repeatable go/no-go checks, the JBO Thread Ring Gauge helps streamline QA workflows, reduce rework, and ensure components meet specification with confidence.