JBO Thread Ring Gauge (NoGo) - UNC - Left Hand - 2A - 1 3/8 x 6 4 Month Widin It pairs well with standard

It pairs well with standard CNC milling setups

accurate cuts and reduced clogging

making it suitable for a range of metals at a precise 12

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

Availability note: The “in stock” designation relates to blanks ready to machine into the reamer

JBO Thread Ring Gauge (NoGo) - UNC - Left Hand - 2A - 1 3/8 x 6 4 Month Widin It pairs well with standardThe 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