JBO Thread Plug Gauge - UNC Go-No/Go - Right Hand - 2B - 1/4 x 20 Hydraulic Expansion Chucks Engineered for efficient material removal

Engineered for efficient material removal in tight spaces

and accurate surface transitions

consistent cuts: The variable-index four-flute design with 29° and 31° helix angles minimizes vibration and resonance

and robust material construction helps you tackle challenging work with greater predictability and less downtime

4H tolerance

JBO Thread Plug Gauge - UNC Go-No/Go - Right Hand - 2B - 1/4 x 20 Hydraulic Expansion Chucks Engineered for efficient material removalThe JBO UNC Go No Go Thread Plug Gauge is a precision inspection tool designed to verify internal threads in holes and housings that use 1 4 20 UNC right hand threads with class 2B tolerance. Its ideal for manufacturing, automotive, and aerospace quality teams that need fast, reliable go no go checks to confirm thread acceptance or rejection. Designed with a sturdy two ended, knurled body, this compact gauge provides easy handling in tight spaces and