JBO Thread Plug Gauge is a precision Go/No-Go tool designed for metric fine threads. It helps engineers, machinists, quality inspectors, and workshop professionals quickly verify threaded holes meet exact specifications. Specifically sized for M33 x 1 threads with a 6H tolerance, this right-hand gauge delivers fast, confident hole acceptance checks.

Made from hardened steel for durability, it resists wear and maintains accuracy through repeated use, keeping your setup consistent across batches and maintenance tasks.

• Go/No-Go Inspection for Instant Acceptance: The Go/No-Go design lets you confirm hole acceptance in seconds—if the plug threads in smoothly (Go) and locks out beyond tolerance (No-Go), you can trust the fit first time.
• Hardened Steel Construction for Longevity: Built to withstand daily testing, this gauge resists wear, nicks, and corrosion, preserving accuracy even after heavy use.
• Precise Metric Fine Thread Fit: M33 x 1, 6H, Right Hand: Precisely matched to standard metric fine threads with 6H tolerance and right-hand orientation, delivering reliable, repeatable checks with minimal ambiguity.

Using the JBO Thread Plug Gauge streamlines quality checks, reduces guesswork, and speeds up assembly and maintenance workflows. Its durable construction and precise sizing help you achieve consistent fits, minimize rework, and maintain tight tolerances across production runs.