VCOIL Plug Gauge (NoGo) - UNC (STI) - Heli Coil Gauge - Right Hand - 3B - 1.3/8 x 6

The VCOIL Plug Gauge (NoGo) is a precision UNC thread gauge designed for Helicoil installations. It combines go/no-go checks in one compact tool, ideal for quality-driven shops that install Helicoil inserts and require reliable, on-the-spot verification.

• Thread Standard: Manufactured and assessed to ANSI/ASME thread system for UNC (STI) Helicoil gauges.
• Go/No-Go Combination: Integrates go and no-go measurements in a single plug gauge for efficient inspection.
• Go End: The go end should screw into the threaded hole by hand with normal effort, indicating the thread meets the specified size.
• No-Go End Limit: The scrap/no-go end must not be turned more than two full revolutions into the cut thread without excessive force.
• Scrap Marking: The scrap side is clearly identified by a red ring for quick recognition in busy work areas.
• Size and Class: 1-3/8 in diameter with 6 TPI UNC thread, 3B class tolerance.
• Orientation: Right-hand gauge designed for standard threading directions.
• Reference Conditions: Calibrated with a reference temperature of 20°C to ensure consistent measurements.

Benefits: Using the VCOIL NoGo plug gauge ensures accurate verification of thread quality before Helicoil insertion, reducing the risk of undersized or oversized holes. It streamlines setup, minimizes scrap, and supports consistent assembly across parts produced under standardized 20°C reference conditions. This gauge provides a clear pass/fail signal on go/no-go checks, helping technicians quickly confirm thread readiness and improve overall machining and repair workflow.