The JBO Thread Ring Gauge (NoGo) - Metric Coarse, Right Hand, 4h, M4 x 0.7 is a precision inspection tool built to verify exterior thread diameters quickly and reliably. It is ideal for manufacturers, machinists, quality teams, and maintenance technicians who need to confirm that metric coarse threads meet the M4 x 0.7 standard before parts move to assembly. With a NoGo design, it helps ensure components do not exceed the specified size, supporting consistent fit and function in every project.

Crafted from hardened steel, the gauge delivers outstanding durability and wear resistance for long service life in demanding work environments. Its reliable construction holds tight tolerances so your measurements stay accurate across shifts and jobs.

• Durable hardened steel construction: delivers long tool life and reliable performance in busy shops, resisting wear to keep measurements consistent.
• Precise NoGo limit for metric coarse threads: enables quick pass/fail decisions on M4 x 0.7 (4h) parts, helping you catch non-conforming components before they reach assembly.
• Easy-to-use, QC-friendly design: supports fast, repeatable inspections and smooth integration into standard inspection workflows, reducing downtime and rework.

This gauge helps you streamline quality control, accelerate throughput, and ensure that metric coarse threaded connections deliver the correct fit, function, and reliability in every application—from production line checks to field maintenance.