VCOIL Plug Gauge (D/E) - BSF (STI) - Heli Coil Gauge - Right Hand - Medium - 5/16 x 22

The VCOIL Plug Gauge is a precise go/no-go tool designed for verifying BSF (British Standard Fine) threads in right-hand holes and Helicoil insert applications. Developed to standard, repeatable results, it’s ideal for quality checks in machining and assembly environments.

• Size & orientation: Right-hand, Medium, 5/16 x 22 BSF thread for accurate, quick checks in standard hole diameters.
• Go/No-Go design: Combines go and no-go ends to confirm threads meet ANSI/ASME specifications; hand-screw the go end into the thread and ensure the scrap side cannot be turned beyond the specified limit.
• Standard compliance: Manufactured and assessed in accordance with ANSI/ASME thread systems for reliable, repeatable measurements.
• BSF (STI) compatibility: Specifically tuned for BSF threads used with Helicoil inserts and STI-compatible applications.
• Scrap side marking: Red ring clearly marks the scrap side for immediate pass/fail identification during inspection.
• Construction & handling: Durable, knurled body with precision ends for easy gripping and consistent results in busy work environments.
• Reference temperature: Measurements defined at 20°C to ensure consistency across parts and gauges.
• Helicoil toolkit compatibility: Designed to integrate into Helicoil insertion workflows, supporting quick verification of thread readiness before insert installation.

Using this gauge helps you quickly verify internal threads, reduce rework, and ensure Helicoil inserts seat correctly. The go/no-go format minimizes guesswork, while the robust construction and standard-compliant design deliver dependable results on the shop floor.