JBO Thread Plug Gauge - UNF Go-No/Go - Right Hand - 2B - 1 3/8 x 12 FMH FLH FHH S&E A&NF M&D accurate contours with a reliable

accurate contours with a reliable surface finish

Reuse-friendly design: The bore can be adjusted as your parts change

66 mm reamer uses M2 high-speed steel and a spiral flute for smooth

Whether you’re removing large amounts of material from steel components or preparing cast iron workpieces for finishing

you receive a tailored reamer that meets exacting size and tolerance requirements

JBO Thread Plug Gauge - UNF Go-No/Go - Right Hand - 2B - 1 3/8 x 12 FMH FLH FHH S&E A&NF M&D accurate contours with a reliableThe JBO UNF Thread Plug Gauge is a precision inspection tool designed to verify internal threads to UNF standards. Built for professionals across manufacturing, automotive, and aerospace, it helps quality teams quickly assess threaded holes and confirm conformance to the 1 3 8 x 12 UNF right hand specification. Go No Go quick conformance check: The dual ends provide an immediate pass fail indication, speeding inspections and reducing guesswork in high