JBO Thread Ring Gauge (NoGo) - UNEF - Left Hand - 2A - 1/4 x 32 FMH FLH FHH S&E A&NF M&D Left-hand spiral flute with right-hand

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

Taper Shank for Secure Toolholding: Rigid seating in compatible holders minimizes runout and improves bore accuracy in milling and turning

reducing chatter and improving surface texture

reducing interference and improving accessibility without sacrificing rigidity

Built for machinists who demand consistent size control and a smooth surface finish

JBO Thread Ring Gauge (NoGo) - UNEF - Left Hand - 2A - 1/4 x 32 FMH FLH FHH S&E A&NF M&D Left-hand spiral flute with right-handThe 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