VCOIL Plug Gauge (NoGo) - UN (STI) - Heli Coil Gauge - Right Hand - 2B - 1.1/2 x 8

The VCOIL Plug Gauge (NoGo) is a combined Go/No-Go thread plug gauge designed for UN (STI) Helicoil applications. Built to ANSI/ASME standards, it provides quick, reliable checks of internal threads in Right Hand configurations.

• Combination Go/No-Go gauge: A single tool that tests both the ability to start the thread by hand (Go) and the limit of acceptable thread depth (No-Go).
• ANSI/ASME thread standards: Manufactured and assessed in accordance with the relevant American standards for consistent gauging results.
• Right Hand: Specifically configured for right-hand threads used with Helicoil inserts.
• 2B class: Conforms to UN/STI 2B thread tolerances for accurate measurement checks.
• Size 1-1/2 x 8: Indicates the nominal thread size and pitch for compatibility with the target components.
• Red-scrap ring: The scrap side is clearly marked with a red ring for immediate visual identification.
• Reference temperature 20°C: Measurement references are standardized at 20 degrees Celsius to ensure consistency across checks.

When using the Go end, hand-thread the gauge into the part’s thread without applying excessive force to verify the thread meets the required standard. The No-Go end must not be turned more than two full turns in by hand; exceeding this limit indicates the thread does not meet the specified tolerance. This gauge helps reduce rework, minimizes scrap, and supports consistent, efficient quality control in production and maintenance environments.