JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M34 x 1.5 is a precision inspection tool designed for metric fine threads. It’s ideal for engineers, machinists, quality teams, and workshops where tight tolerances matter and repeatable fits are essential. Use it to quickly verify threaded holes and prevent mismatches in assemblies.

Designed for reliability in busy shops, the Go/No-Go design lets you instantly judge if a hole is within tolerance—no guesswork, no teardown. The durable hardened steel construction resists wear and maintains accuracy even after repeated use in demanding environments.

• Go/No-Go quick checks: Quickly verify hole tolerance with a single insert/remove, reducing inspection time and keeping production moving smoothly.
• Hardened steel construction: Built to resist wear and deliver consistent performance over time in tough workshop conditions.
• Left-Hand thread, M34 x 1.5, 6H compatibility: Optimized for specialized metric fine-thread applications, ensuring correct fit and preventing cross-threading in critical assemblies.

This gauge supports fast, reliable quality control, helping you maintain precise thread fits across parts and assemblies. Its robust design and specific size make it a dependable choice for routine inspections and specialized projects alike.