VCOIL Plug Gauge (NoGo) - Metric (STI) - Heli Coil Gauge - Right Hand - 4H - M39 x 4 NCDC Drill Chuck 53 mm hole size within

53 mm hole size within ISO H5 tolerance

and helping you maintain tight quality standards from one part to the next

Designed for engineers who require consistent size control

Teeth: 100 teeth (fine pitch for smooth

97 mm HSS‑E stub reamer designed to finish holes to exact size with a clean

VCOIL Plug Gauge (NoGo) - Metric (STI) - Heli Coil Gauge - Right Hand - 4H - M39 x 4 NCDC Drill Chuck 53 mm hole size withinPrecisely 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