VCOIL Plug Gauge (D/E) - UNC (STI) - Heli Coil Gauge - Right Hand - 3B - No. 10 x 24

The VCOIL Plug Gauge (D/E) UNC (STI) Helicoil Gauge is a precision internal-thread gauge designed for verifying helicoil inserts and UNC-threaded parts. It’s built for machinists, quality inspectors, and manufacturers who need reliable go/no-go validation of threaded components.

• No. 10 x 24 size: Size designation No. 10 x 24 with 3B internal thread class for accurate internal checks.
• Internal thread class: 3B tolerance class ensures consistent engagement with the mating internal threads.
• Orientation: Right-hand gauge orientation aligned with standard UNC (STI) threads.
• Thread system: UNC (STI) thread system referenced for compatibility with helicoil inserts.
• Go/No-Go design: Combines go and no-go functionality to verify acceptable thread engagement and scrap conditions.
• Go end usability: The go end must screw into the thread cut into a part by hand without excessive force.
• No-Go scrap limit: The scrap end must not be able to be turned more than two full revolutions in the cut thread.
• Scrap indicator: Scrap side is marked with a red ring for quick identification during inspection.
• Standards compliance: Manufactured and assessed in accordance with ANSI/ASME thread system standards.
• Temperature reference: Reference temperature for parts and gauges is 20°C to ensure consistent measurements.
• Helicoil application: Specifically designed for helicoil gauge checks to ensure thread repair integrity.

By using the VCOIL plug gauge, you can confidently verify thread quality before assembly, reduce the risk of misfit parts, and maintain consistent quality across helicoil repairs. The go/no-go design provides fast pass/fail results, while the red-scrap indicator streamlines inspections on busy shop floors. The 20°C reference ensures reliable readings across environments, supporting precise dimensional control in production.