The JBO Thread Ring Gauge (NoGo) - Metric Fine is a precision inspection tool designed to verify external thread diameters on metric fasteners and threaded components. It’s ideal for machine shops, contract manufacturers, quality control labs, and maintenance teams that require reliable, repeatable checks to confirm parts meet exact thread standards.

Designed for right-hand metric fine threads, including M45 x 1.5 with a 6e designation, the NoGo gauge is crafted from hardened steel to deliver durable performance in demanding environments. Its simple design supports quick, confident identification of out-of-tolerance threads, helping quality teams keep production on schedule.

• Accurate No-Go verification for metric fine threads: Quickly determine if an external thread diameter is within tolerance for M45 x 1.5 right-hand threads, helping ensure compliant parts and reduce rework.
• Durable hardened steel construction: Built to withstand daily use, resist wear, and maintain measurement integrity across many inspections in busy workshops.
• User-friendly, fast setup and interpretation: Clear, intuitive design lets operators identify out-of-spec parts at a glance, shortening inspection times and boosting throughput.

With the JBO Thread Ring Gauge, you gain a reliable reference that speeds inspections, improves part compatibility across assemblies, and supports consistent results batch after batch. The hardened steel body resists wear and maintains dimensional integrity, so you can trust the readings you take and the decisions you make—whether you’re validating supplier parts or verifying components during repairs and assembly.