The JBO Thread Ring Gauge (GO) — Metric Fine, Right Hand, 6h, M20 x 1 — is a precision tool designed to verify external thread diameters on fasteners and turned parts. It helps manufacturers, machinists, and inspectors quickly confirm that components meet the defined metric fine-thread standard.

Crafted from hardened steel for lasting durability, this GO gauge resists wear in busy workshop environments. Its straightforward design makes it easy to identify properly conforming threaded components, supporting reliable quality control and precision engineering.

• Go Gauge for Metric Fine Threads: Quickly verify that external threads conform to the M20 x 1 metric fine specifications, speeding up inspection and reducing guesswork.
• Hardened Steel Construction: Built to withstand daily use in demanding environments, maintaining dimensional accuracy over time and resisting wear.
• User-Friendly Pass/Fail Identification: Clear, intuitive engagement helps operators determine conformance at a glance, minimizing downtime and rework.

With this gauge, inspectors can quickly pass or reject components, reducing rechecks and downtime while ensuring every part meets the M20 x 1 metric fine thread standard. The hardened steel construction and precise Go geometry deliver consistent results batch after batch, supporting efficient quality control across manufacturing, assembly, and service tasks.