JBO Thread Ring Gauge (NoGo) - UNC - Left Hand - 2A - 1 3/8 x 6 4 Month Widin Square-edge rib processing geometry: Precisely

Square-edge rib processing geometry: Precisely shapes narrow ribs with clean edges and tight tolerances

and right-hand cutting to deliver controlled material removal and clean hole edges

Its through-coolant design and precise sizing help minimize downtime and rework

and reliable performance when cutting hardened steels and alloys

The JBO Thread Plug Gauge is a precision go/no-go tool designed to quickly verify internal threads against Unified thread standards

JBO Thread Ring Gauge (NoGo) - UNC - Left Hand - 2A - 1 3/8 x 6 4 Month Widin Square-edge rib processing geometry: PreciselyThe JBO Thread Ring Gauge (NoGo) for UNC left hand threads is a precision inspection tool designed to verify external thread diameters on LH components. Sized for a 1 3 8" major diameter with 6 threads per inch and built to Class 2A tolerance, it helps ensure parts meet Unified thread standards across manufacturing, automotive, and aerospace applications. Crafted from hardened steel, this gauge delivers durability in busy workshops and QC