JBO Plug Gauge - UNF (STI) Heli Coil Gauge - Right Hand - 2B - 1/2 x 20 - Calibrated (DAkkS Calibration) G delivering superior surface quality and

delivering superior surface quality and consistent dimensions

while its geometry supports efficient chip evacuation and stable cutting across aluminium

this holder integrates seamlessly into standard BT50 setups

The left-hand spiral flute design supports efficient chip evacuation and stable cutting

Durable hardened steel construction: Designed for rugged use in demanding environments

JBO Plug Gauge - UNF (STI) Heli Coil Gauge - Right Hand - 2B - 1/2 x 20 - Calibrated (DAkkS Calibration) G delivering superior surface quality andThe JBO UNF (STI) Helicoil Plug Gauge is a precision measurement tool designed to verify UNF 1 2 x 20 threaded Helicoil inserts (STIs). Its ideal for manufacturing, automotive, and aerospace quality teams that fast, reliable pitch diameter checks to ensure inserts fit correctly in assemblies. This right hand gauge is calibrated to 2B and DAkkS traceable, aligning with ANSI ASME thread standards for consistent, repeatable results. DAkkS calibrated