JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 3A - 1 x 8 FMH radii forming

radii forming

reliable hole validation without guesswork

62 mm for consistent

The cobalt content in HSS‑E enhances heat tolerance and wear resistance

repeatable hole finishing with a durable M2 high-speed steel body

JBO Thread Ring Gauge (NoGo) - UNC - Right Hand - 3A - 1 x 8 FMH radii formingThe JBO Thread Ring Gauge (NoGo) is a precision tool for inspecting external UNC threads. Sized for 1 8 UNC right hand threads and crafted from hardened steel, it helps manufacturers, automotive teams, and aerospace shops verify thread diameters quickly and reliably, with a NoGo design that makes non conforming threads easy to identify. Go No Go Quick Check Design: Quickly identify in spec vs. out of spec threads to speed inspections and reduce