VCOIL Plug Gauge (D/E) - UNC (STI) - Heli Coil Gauge - Right Hand - 2B - No. 8 x 32

VCOIL Plug Gauge (D/E) is a precision go/no-go thread gauge designed for UNC (STI) Helicoil installations. Right-hand, 2B class, No. 8 x 32 size, built to verify internal thread quality quickly and consistently.

• Go/No-Go Plug Gauge: A combined gauge that tests both acceptance (go) and rejection (no-go) criteria in one tool; the go end should thread into the part by hand, while the no-go/scrap end must not thread in more than two turns under normal force.
• ANSI/ASME Thread Standard Compliance: Manufactured and assessed in accordance with relevant ANSI/ASME thread system standards for reliable, repeatable results.
• Scrap Ring Indicator: The scrap side is marked with a red ring to prevent accidental use as the go gauge and to clearly identify rejection criteria.
• Thread System: Configured for UNC (Unified National Coarse) threads, aligning with STI Helicoil installations for consistency.
• Right-Hand Configuration: Optimized for right-hand threads commonly used in Helicoil assemblies.
• Size: No. 8 x 32 – precise nominal size to match standard insert threads for 2B tolerance class.
• Temperature Reference: Reference temperature for parts and gauges is 20°C to maintain measurement consistency.

This gauge helps technicians and quality teams quickly validate threaded holes intended for Helicoil inserts, ensuring parts meet the required 2B UNC No. 8 x 32 specifications. By using the go/no-go check with a clearly marked scrap side, you can detect under- or over-tolerance threads before assembly, reduce scrap, and shorten inspection cycles. The 20°C reference temperature ensures measurements reflect standard testing conditions, promoting consistent results across shops and job sites.