JBO Thread Ring Gauge (NoGo) - UNEF - Right Hand - 2A - 7/8 x 20 Die & Mould Collet Chucks you get consistent hole dimensions

you get consistent hole dimensions suited for precision assemblies

With a carbide tipped insert (K10)

this 4-flute end mill uses a variable-helix geometry to deliver clean corners and smooth pockets in stainless steel and exotic alloys

and hobbyists will appreciate its predictable alignment from the straight shank and chips evacuated by the left-hand spiral flute paired with right-hand cutting for a consistently smooth bore finish

JBO Thread Ring Gauge (NoGo) - UNEF - Right Hand - 2A - 7/8 x 20 Die & Mould Collet Chucks you get consistent hole dimensionsThe JBO Thread Ring Gauge (NoGo) for UNEF external threads in a Right Hand orientation is a precision inspection tool designed to verify external thread diameters quickly and reliably. Tailored for manufacturing, automotive, and aerospace environments, this NoGo gauge helps you identify non conforming threads at a glance, ensuring proper fit and safe assembly. Crafted from hardened steel, this gauge maintains dimensional stability under routine shop