VCOIL Plug Gauge (D/E) - Metric (STI) - Heli Coil Gauge - Right Hand - 4H - M27 x 3

This VCOIL Plug Gauge is a precision metric thread gauge designed for Helicoil inserts. It combines go/no-go testing in a single tool, aligned with ANSI/ASME thread standards, to verify M27 x 3 right-hand threads with 4H tolerance.

• Dual-end plug gauge: Go and no-go ends provide a single, streamlined check for threading accuracy, with the scrap side clearly marked for quick identification.
• ANSI/ASME compliant: Manufactured and assessed according to the relevant American standards for reliable thread verification.
• Red scrap-ring marking: Visual cue on the scrap side helps distinguish the non-conforming limit without ambiguity.
• Go end usability: The go end should screw into the thread cut by hand without excessive force, confirming proper fit.
• No-Go limit: The scrap end must not be able to be manually turned more than two revolutions into the thread cut.
• Metric (STI) Helicoil gauge: Specifically designed for metric Helicoil applications, supporting precise M27 x 3 threads.
• Right-hand, 4H, M27 x 3: Defined thread direction and tolerance class to match common insert and thread standards.
• Reference temperature: Calibration and parts gauges are specified at 20°C to ensure consistent measurements.
• Ergonomic design: Knurled body and secure end fittings enable easy handling and repeatable gauging in tight workshop spaces.

Using this gauge helps ensure threads meet exacting standards, reducing scrap and rework. The go/no-go design quickly confirms fit and tolerance, while the red scrap ring provides an immediate visual indication of limits. Ideal for quality control in manufacturing, maintenance, and repair workflows involving Helicoil inserts and metric thread sizes.