VCOIL Plug Gauge (D/E) - UNF (STI) - Heli Coil Gauge - Right Hand - 3B - 5/8 x 18 FMH FLH FHH S&E A&NF M&D The rugged construction means fewer

The rugged construction means fewer replacements and less maintenance

With a robust build and precise fit

reducing chatter and improving surface finish across a wide range of materials

Invest in precision you can trust for reliable reaming outcomes

It combines a straight shank with a left-hand spiral flute and right-hand cutting to produce accurate

VCOIL Plug Gauge (D/E) - UNF (STI) - Heli Coil Gauge - Right Hand - 3B - 5/8 x 18 FMH FLH FHH S&E A&NF M&D The rugged construction means fewerThe VCOIL Plug Gauge is a precision go no go tool designed to verify 5 8 18 UNF threads used with helicoil inserts in right hand applications. Built to the 3B class with a dedicated scrap side red mark, it ensures consistent thread quality during production and repair. Thread size and type: 5 8 x 18 UNF, right hand thread, 3B class tolerance. Go No Go design: Combines go and no go plug gauges in one instrument; go end threads into the machined thread