JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M38 x 1 ER Collet Chucks and predictable results from run

and predictable results from run to run

Used in assembly and fabrication workflows

Its tapered neck enhances tool stability and rigidity

and improved surface finish across challenging materials

Hardened steel construction with wear‑resistant finish: Delivers lasting durability in busy workshops

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M38 x 1 ER Collet Chucks and predictable results from runThe JBO Thread Ring Gauge (NoGo) Metric Fine Left Hand 6g M38 x 1 is a precision inspection tool designed to verify external thread diameters quickly and reliably. Its ideal for machinists, quality inspectors, engineers, and shop floor personnel who need fast, confident pass fail checks on metric fine threads. Crafted from hardened steel for durability in demanding environments, this NoGo gauge resists wear and retains its precise dimensions through