The JBO Thread Plug Gauge is a precision inspection tool designed for internal metric fine threads. Specifically configured for M37 x 0.75 with a 6H tolerance and a right-hand orientation, this Go/No-Go gauge helps machinists, quality teams, and assembly technicians quickly verify that threaded holes meet exact specifications.

Crafted from hardened steel for long-lasting performance, the gauge delivers reliable, repeatable checks in busy shop environments. Its durable construction resist wear, ensuring accuracy across many inspections without frequent replacements.

• Go/No-Go Design for Fast, Reliable Verification: Quickly determine if a hole accepts the go limit and blocks the no-go limit, speeding up inspections and preventing misfits.
• Right-Hand M37 x 0.75 with 6H Tolerance: Precisely matched to common metric fine-thread holes, delivering consistent results and compatibility in standard assemblies.
• Hardened Steel Construction for Long Life: Built to endure daily use, delivering durability and stable performance over countless measurement cycles.

With the JBO Thread Plug Gauge, you gain confidence in every threaded connection. The clear Go/No-Go workflow reduces inspection time, minimizes guesswork, and helps prevent costly rework from out-of-tolerance holes—making it a dependable addition to any machining, QA, or maintenance toolkit.