JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - 7/16 x 20 End Mill Holders performing in-process checks

performing in-process checks

all conforming to DIN 8051 B and ISO H5 tolerances

with predictable despatch within 24/48 hours

repeatable tool that enhances your workflow

Left-hand spiral flute with right-hand cutting: Efficient chip control and stable cutting action for a predictable finish on tough materials

JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - 7/16 x 20 End Mill Holders performing in-process checksThe JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external UNF threads on left hand components. Sized for 7 16 x 20 and configured for the 2A class, its an essential asset for shops and labs across manufacturing, automotive, and aerospace to quickly confirm correct thread fit. With a meticulous NoGo segment, this gauge makes non conforming threads immediately obvious, helping inspectors and machinists identify out of spec parts