VCOIL Plug Gauge (GO) - Metric (STI) - Heli Coil Gauge - Right Hand - 4H - M39 x 4 Hydraulic Expansion Chucks supporting accurate assemblies and repeatable

supporting accurate assemblies and repeatable production results

Using this insert helps streamline your threading workflow

repeatable go results in every inspection

and hobbyists tackling automotive housings

Built around an intermediate precision K10 tip and a taper shank

VCOIL Plug Gauge (GO) - Metric (STI) - Heli Coil Gauge - Right Hand - 4H - M39 x 4 Hydraulic Expansion Chucks supporting accurate assemblies and repeatableVLKEL VCOIL Plug Gauge (GO) for metric M39 x 4 threads provides precise, hand validated thread acceptance for right hand 4H internal threads, aligned with ANSI ASME standards. Thread standard: Metric (STI) internal thread system conforming to ANSI ASME guidelines. Size: M39 x 4 (4 mm pitch) for 4H internal thread applications. Gauge type: GO thread plug gauge designed to be threaded into the corresponding cut by hand to verify acceptance. Handedness: