JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 2A - 9/16 x 12 FMH FLH FHH S&E A&NF M&D knurled profile provides a secure

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

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

controlled hand finishing

it handles speeds up to 25

Accurate go/no-go external thread verification: Quickly determine if a thread is within tolerance and flag non-conforming parts

JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 2A - 9/16 x 12 FMH FLH FHH S&E A&NF M&D knurled profile provides a secureThe 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