JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 3A - 1/2 x 13 NCDC Drill Chuck Its robust carbide core resists

Its robust carbide core resists wear in demanding materials

while the left‑hand spiral flute promotes efficient swarf removal and smoother cutting in appropriate setups

04 mm diameter with repeatable accuracy

repeatable mounting for reliable results

Its durable construction and thoughtful geometry translate to improved workflow

JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 3A - 1/2 x 13 NCDC Drill Chuck Its robust carbide core resistsThe JBO Thread Ring Gauge (NoGo) UNC Right Hand 3A 1 2 x 13 is a precision inspection tool designed to verify external thread diameters against Unified thread standards. Its ideal for manufacturing, automotive, and aerospace environments where quick, reliable thread checks are part of the QA process. With its NoGo design, you can immediately identify non conforming threads, helping prevent improper fits and costly rework. Crafted from hardened steel,