The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external thread diameters on fasteners, shafts, and machined components. It’s ideal for engineers, machinists, quality inspectors, and buyers who need quick, reliable checks to ensure parts meet exact specifications.

Crafted from hardened steel for lasting wear resistance, this NoGo gauge is built to withstand daily use in busy workshops and production lines. It features right-hand, metric fine threading (M42 x 1.5) with a 6h tolerance, delivering consistent, accurate measurements and enabling rapid identification of out-of-tolerance components during quality control.

• Rugged hardened-steel construction: Resists wear and maintains accuracy through repeated inspections, helping you rely on measurements batch after batch.
• Precise metric fine threading for M42 x 1.5: Delivers consistent, repeatable checks for this common thread size, supporting reliable QA across parts and assemblies.
• Fast, clear Go/No-Go inspection: Enables quick decision making on in-tolerance versus out-of-tolerance parts, reducing inspection time and downtime.

Used in quality control workflows, the JBO Thread Ring Gauge streamlines your inspection process by providing straightforward, durable verification of external threads. Its combination of precision dimensions and tough materials helps you maintain tight tolerances, minimize rework, and keep production moving with confidence.