JBO Thread Ring Gauge (NoGo) - UNEF - Left Hand - 2A - 1/4 x 32 FMH FLH FHH S&E A&NF M&D and durable carbide construction stands

and durable carbide construction stands up to demanding mold and die tasks

Left-hand spiral flute with right-hand cutting: Promotes efficient chip flow and a smooth bore finish

it delivers consistent results within ISO H5 tolerance under DIN 212-B standards

Wide clamping range with round‑shank tooling: Covers 3–20 mm tooling within the ER32 standard

reducing interference and improving accessibility without sacrificing rigidity

JBO Thread Ring Gauge (NoGo) - UNEF - Left Hand - 2A - 1/4 x 32 FMH FLH FHH S&E A&NF M&D and durable carbide construction standsThe JBO Thread Ring Gauge (NoGo) is a precision tool for verifying external thread diameters on fasteners, fittings, and machined components. Ideal for manufacturing, automotive, and aerospace quality labs, it helps you quickly determine whether a part meets UNEF thread specifications. Designed as a NoGo gauging solution, it provides an at a glance pass fail check that prevents undersized or oversized threads from slipping into assemblies, saving time