JBO Plug Gauge - UNF (STI) Heli Coil Gauge - Right Hand - 2B - 5/16 x 24 - Calibrated (DAkkS Calibration) Tapping Chucks spiral-flute HSS (M2) tool designed

spiral-flute HSS (M2) tool designed for precise hole finishing with reliable

Fabricated from premium-grade carbide

Bottom lead taps are a recognized variant designed for reliable starting performance

knurled grip: The outer knurling provides a secure

delivering long service life in daily shop use and demanding environments

JBO Plug Gauge - UNF (STI) Heli Coil Gauge - Right Hand - 2B - 5/16 x 24 - Calibrated (DAkkS Calibration) Tapping Chucks spiral-flute HSS (M2) tool designedThe JBO Plug Gauge UNF (STI) Heli Coil Gauge is a precision measuring tool designed to verify the pitch diameter and fit of threaded insert assemblies used in UNF STI applications. Manufactured to ANSI ASME thread standards, this gauge supports quality control across manufacturing, automotive, and aerospace environments by delivering consistent, reliable checks of plug gauge measurements. Built for right hand operation with a 2B tolerance class and a