JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 2A - 9/16 x 12 FMH FLH FHH S&E A&NF M&D it handles speeds up to

it handles speeds up to 25

while the optimized flute geometry promotes clean cuts and reliable chip evacuation

knurled profile provides a secure grip—even with gloves—so you can inspect with confidence and consistency

The 4-flute configuration improves chip clearance and surface finish

this HSS-E reamer finishes drilled holes to ISO H4 tolerance

JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 2A - 9/16 x 12 FMH FLH FHH S&E A&NF M&D it handles speeds up toThe JBO Thread Ring Gauge (NoGo) for UNC, Right Hand, 2A, 9 16 x 12 is a precision inspection tool designed to verify external thread diameters against Unified thread standards. Its ideal for manufacturers, machinists, quality teams, and inspectors who need quick, reliable checks to ensure threaded components will assemble correctly and perform as intended. Built for daily use in workshops and fabrication shops, this gauge helps confirm that parts