JBO Thread Plug Gauge is a precision tool designed to verify metric fine-threaded holes. Sized for M27 x 0.75 with a right-hand thread and 6H tolerance, it is ideal for manufacturers, machinists, and quality teams who require exact fits in assembly. The Go/No-Go design lets you quickly assess whether a threaded bore meets the target tolerance, speeding up setup and reducing rework.

• Go/No-Go quick checks: Enables fast pass/fail decisions by confirming whether the hole accepts a full thread engagement (Go) and does not exceed tolerance (No-Go), improving inspection speed on the shop floor.
• Hardened steel durability: Built to resist wear and maintain accuracy over many cycles, delivering reliable performance in demanding workshop environments.
• Metric fine-thread compatibility (M27 x 0.75, right-hand, 6H): Precisely matched to common metric fine-thread standards, providing consistent, repeatable checks that support quality control and proper part mating.

With the JBO Thread Plug Gauge, you streamline threaded-hole inspections, reduce guesswork in setup, and ensure consistent results across production runs. Its durable construction and exact metric sizing help keep workflows efficient, improve assembly confidence, and support high-quality outcomes from prototype to high-volume manufacturing.