VCOIL Plug Gauge (D/E) - Metric (STI) - Heli Coil Gauge - Right Hand - 4H - M4 x 0.7

The VCOIL Plug Gauge (D/E) is a precision metric go/no-go gauge designed for Helicoil inserts, tailored for right-hand M4 x 0.7 threads. Manufactured to ANSI/ASME thread standards, it provides quick, reliable checks that keep production and maintenance on spec.

• Go/No-Go Thread Gauge: Combines a go end and a no-go end for a single, efficient thread acceptance test.
• Metric M4 x 0.7 Thread: Verifies the standard M4 x 0.7 pitch to ensure proper mating with Helicoil inserts.
• Right-Hand Configuration: Optimized for testing right-hand threaded applications commonly used with Helicoil products.
• 4H Tolerance Grade: Aligns with the 4H hole tolerance class to ensure compatible thread engagement.
• ANSI/ASME Compliance: Manufactured and assessed in accordance with the recognized ANSI/ASME thread system for consistent quality.
• Red Scrap Ring: Scrap side is clearly marked with a red ring to prevent misreading during inspection.
• 20°C Reference Temperature: Measurements are standardized at 20°C to maintain accuracy in typical workshop conditions.
• Knurled Body: Textured surface provides a secure grip for precise handling during checks.
• Dual-Ended Design: The go end should thread in by hand without excessive force, while the scrap end must not exceed two manual turns into the thread.

Using the VCOIL Plug Gauge enables quick, confident thread acceptance decisions, reducing rework and ensuring consistent fit with Helicoil inserts. It’s an essential tool for quality control, setup, and routine maintenance where reliable M4 x 0.7 right-hand threads are required. The clear go/no-go feedback, combined with the standardized 20°C reference, helps teams maintain traceable, repeatable results across jobs and shifts.