The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. It helps engineers, machinists, and quality teams quickly verify threaded holes for correct size and fit.

With its Go/No-Go design, you can perform fast, unambiguous checks that confirm parts assemble as intended, helping you maintain tight tolerances in production without slowing down workflow.

• Go/No-Go design for rapid hole checks: Quickly determine pass/fail conditions to speed up inspections and reduce guesswork.
• Metric fine thread compatibility (M38 x 1.5, right-hand): Ensures you’re inspecting the exact thread size and direction used in your components for precise verification.
• Hardened steel construction for durability: Built to withstand daily use in busy shops, maintaining accuracy and extending tool life.

In daily use, this gauge supports consistent, efficient quality control by providing clear acceptance criteria, reducing rework, and helping teams deliver reliable assemblies with confidence. The rugged, long-lasting construction ensures steady performance through repetitive checks, making it a dependable addition to any workshop or QA lab.