The JBO Thread Ring Gauge (GO) is a precision tool designed to verify external threads with speed and confidence. This GO gauge is tailored to Metric Fine, Right Hand — 6h — M39 x 1.5, making it ideal for machining, assembly, and quality control where thread accuracy matters.

Machined from hardened steel, it resists wear and keeps its exact dimensions through heavy use in busy workshops. The straightforward GO design makes it easy to identify properly conformed threads at a glance, supporting consistent measurement results and efficient inspections.

• Exact M39 x 1.5 GO gauge for metric fine, right-hand threads: Precisely checks the major diameter and tolerance so you can make fast, reliable pass/fail decisions in quality control.
• Hardened steel construction for durability: Withstands daily shop-floor use and maintains accuracy, delivering long service life in demanding environments.
• Easy-to-use, quick-check design: Enables rapid alignment and clear identification of conforming components, reducing inspection time and downtime.

Using the JBO GO thread ring gauge streamlines your inspection workflow with reliable, repeatable checks. It helps prevent misfits, supports higher first-pass yields, and provides consistent results across production runs, backed by durable construction that stands up to years of use in the field.