The JBO Thread Ring Gauge (NoGo) - Metric Fine is a precision tool for verifying external thread diameters on fasteners, fittings, and machined parts. It’s designed for engineers, inspectors, buyers, and workshop teams who need fast, dependable go/no-go checks to verify metric fine thread forms meet specification.

Crafted from hardened steel, the gauge offers durable wear resistance for demanding environments. Its easy-to-read go/no-go design helps identify non-conforming threads quickly, supporting efficient quality control and consistent manufacturing results.

• Go/No-Go quick checks: Quickly identify out-of-tolerance threads and flag non-conforming parts, reducing inspection time and rework.
• Durable hardened steel construction: Built to withstand daily use in busy workshops, resisting wear to maintain long-term accuracy.
• Right-Hand, 6g metric fine compatibility (M120 x 1.5): Specifically matched to common metric fine thread forms, ensuring reliable measurements for standard components.

Using the JBO Thread Ring Gauge (NoGo) - Metric Fine in your QA workflow helps standardize thread inspection, shorten test cycles, and improve accuracy across batches. It delivers clear pass/fail results for external threads and supports consistent, repeatable measurements, giving you confidence in each threaded connection and reducing downtime from non-conforming parts.