The JBO Plug Gauge - Metric Fine (STI) Heli Coil Gauge is a calibrated right-hand plug gauge designed for metric screw thread inserts (STIs). Sized for M24 x 1.5 with a 6H tolerance, it provides quick, unambiguous checks to confirm inserts are within spec for reliable assembly and quality control across manufacturing, automotive, and aerospace applications.

Manufactured and assessed to ANSI/ASME thread standards, this gauge carries DAkkS calibration for traceable, auditable accuracy. The robust, knurled body is built for repeated use in demanding shop environments, delivering dependable performance day after day.

• DAkkS-calibrated for traceable accuracy: Delivers auditable measurements you can rely on for QA records, supplier audits, and consistent quality control.
• Metric fine size M24 x 1.5, right-hand plug gauge (6H): Precisely matches common STI insert specifications for fast, confident pass/fail checks and reduced guesswork.
• ANSI/ASME-compliant manufacturing and inspection: Ensures consistent production quality and repeatable results across lots and suppliers.

This plug gauge helps streamline insert verification, reduces inspection time, and improves overall measurement reliability in both high-volume production and precision-focused workshops. With DAkkS calibration and standards-aligned construction, you can trust every measurement to support accurate, efficient threaded insert work.