The JBO Thread Plug Gauge is a precision tool designed for metric fine threads. Specifically configured for M17 x 1.5 with a 6H tolerance and left-hand orientation, it serves engineers, machinists, inspectors, and assemblers who demand consistent thread conformity. Use it to quickly verify threaded holes during quality checks, manufacturing, or assembly steps.

With a Go/No-Go design, this gauge delivers fast, objective assessments of internal threads—helping you confirm that holes will accept the mating part and seat correctly every time. Its straightforward, pass/fail feedback supports efficient workflows and reduces guesswork in critical threading operations.

• Go/No-Go Precision for Metric Fine Threads: Rapidly verify that an M17 x 1.5 hole meets the 6H tolerance, delivering clear pass/fail results to accelerate inspection and ensure reliable fits.
• Left-Hand Thread Verification: Specifically engineered for left-hand threading applications, helping prevent cross-threading errors and ensuring correct assembly orientation.
• Hardened Steel for Long-Lasting Durability: Built to withstand daily workshop use, maintaining accuracy and resisting wear for hundreds of checks without drift.

Incorporating this gauge into your quality control and assembly processes helps you achieve consistent thread engagement, speed up validation, and reduce rework. The durable construction and precise Go/No-Go feedback empower you to make confident decisions quickly, improving overall workflow and output quality.