The JBO Plug Gauge - Metric Fine (STI) is a calibrated plug gauge crafted to verify metric screw thread inserts (STIs). Designed for manufacturing floors, maintenance shops, and QA labs, it provides a fast, dependable check to ensure inserts meet exact metric STI specifications.

Manufactured and assessed to ANSI standards within the ASME thread system, this right-hand gauge is M22 x 1.5 with a 6H tolerance and is calibrated (DAkkS Calibration) to deliver traceable accuracy for quality control and supplier qualification.

• Precise metric STI verification: Confirms M22 x 1.5 inserts conform to the 6H tolerance and ANSI/ASME standards, delivering reliable pass/fail checks every time.
• DAkkS-calibrated accuracy: Provides traceable, documented measurement results for QA records, audits, and supplier qualification.
• Durable, ergonomic design: Right-hand orientation with a knurled body and robust threading gives comfortable, repeatable use in busy shops and production lines.

When you integrate the JBO Plug Gauge into your workflow, you gain fast, confident checks of STI inserts, helping to prevent undersized or oversized threads in critical assemblies. The DAkkS-calibrated accuracy provides auditable evidence for quality systems, while the rugged construction stands up to daily use in automotive, aerospace, and general manufacturing environments. This means quicker acceptance decisions, reduced rework, and consistently reliable results across your production line.