The JBO Thread Plug Gauge is a precision instrument designed to verify metric fine-thread holes. Optimized for M38 x 2 left-hand threads and 6H tolerance, it helps professionals in manufacturing, maintenance, and skilled hobbies ensure components fit correctly on every build or repair.

Built for reliability, this gauge delivers quick, clear go/no-go results, enabling fast quality checks without guesswork. Its rugged design is ideal for daily workshop use, production lines, and field service where accurate thread verification matters most.

• Metric fine-thread focus: Specifically engineered for M38 x 2 LH threads, ensuring accurate hole checks for critical fits.
• Go/No-Go quick verification: Simple go/no-go design speeds inspection, reducing downtime and rework by confirming within-tolerance holes at a glance.
• Durable hardened steel construction: Resists wear and maintains precision through heavy use, providing long-lasting reliability in busy environments.

This plug gauge helps you streamline your workflow by delivering fast, dependable checks that support consistent assembly quality. With its durable build and precise Go/No-Go results, you can confidence-check thread holes, minimize rework, and keep projects on schedule.