VCOIL Plug Gauge (NoGo) - Metric (STI) - Heli Coil Gauge - Right Hand - 4H - M39 x 4 NCDC Drill Chuck external-thread inspections become a straightforward

external-thread inspections become a straightforward part of your workflow

Designed for engineers who require consistent size control

53 mm hole size within ISO H5 tolerance

Four-Flute Design with Efficient Chip Evacuation: The 4-flute geometry provides strong cutting action and effective chip clearance

VCOIL Plug Gauge (NoGo) - Metric (STI) - Heli Coil Gauge - Right Hand - 4H - M39 x 4 NCDC Drill Chuck external-thread inspections become a straightforwardPrecisely engineered for helicoil and insert applications, the VCOIL Plug Gauge (NoGo) verifies M39 x 4 threads to metric STI standards. Right handed and 4H class, its built for manufacturing environments that require reliable go no go verification of thread quality. Thread size and class: M39 x 4, 4H tolerance, metric (STI) standard Go No Go design: Combined go plug gauge and no go plug gauge; go end threads into the cut by hand with controlled