The JBO Thread Plug Gauge is a purpose-built inspection tool for metric fine threads. Designed for M13 x 0.75 with a right-hand thread and 6H tolerance, this Go/No-Go gauge helps you verify that threaded holes meet exact specifications. It’s ideal for machinists, quality inspectors, and assembly professionals who require fast, repeatable checks without guesswork.

Use it to confirm both minimum and maximum limits in one quick check—the Go end verifies the hole meets the minimum size for a proper fit, while the No-Go end confirms the hole isn’t oversized. This simple, reliable method reduces rework and speeds up setup and inspection on busy shop floors.

• Go/No-Go pair for fast, decisive checks: The two ends instantly indicate if a hole meets the minimum size or exceeds the maximum, delivering clear pass/fail decisions and reducing guesswork during assembly.
• Hardened steel construction for durability: Built to withstand daily use, resisting wear and maintaining accurate measurements over time in demanding workshop environments.
• Precise metric fine threading standard (M13 x 0.75, 6H, right-hand): Aligns with common metric specs so inspections translate directly to reliable, consistent part-to-part fits and fewer rework cycles.

By enabling rapid, repeatable checks, the JBO Thread Plug Gauge helps you improve throughput and quality. Its durable construction stands up to long-term use, while the Go/No-Go design and precise metric specification remove ambiguity from hole inspection—giving you confidence that every threaded component will assemble correctly the first time.