The JBO Thread Plug Gauge is a precision inspection tool designed specifically for metric fine threads. Tailored for right-handed M3 x 0.25 holes with a 5H tolerance, it helps ensure accurate threading in assemblies, maintenance, and quality checks. Its dual-ended Go/No-Go design lets you quickly confirm hole acceptance, so you can move projects forward with confidence.

• Go/No-Go inspection for metric fine threads (M3 x 0.25): Quickly verify hole tolerance with one gauge, enabling fast pass/fail decisions and reducing guesswork in assembly and QA processes.
• Hardened steel construction for lasting durability: Built to withstand daily workshop use, resisting wear and maintaining accurate measurements over time.
• Ergonomic knurled body with secure grip: Easy handling and precise alignment in busy environments or when working with gloves, helping you complete checks faster and more reliably.

This gauge delivers dependable performance in busy shops and production lines, supporting consistent results across jobs. Its metric fine-thread compatibility, robust construction, and user-friendly design make it a trustworthy addition to any inspection toolkit, helping you speed up setups, reduce rework, and ensure components thread together with precision.