JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M140 x 4 Hydraulic Expansion Chucks Left-hand spiral flute with right-hand

Left-hand spiral flute with right-hand cutting: Optimized geometry promotes smooth cutting and efficient chip evacuation for cleaner

supporting consistent results across multiple passes

Graphite’s high thermal conductivity and low friction help maintain stable cutting conditions and clean edge finishes

it provides reliable performance when you need a tool tailored to exacting specifications

or carving precise grooves

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M140 x 4 Hydraulic Expansion Chucks Left-hand spiral flute with right-handThe JBO Thread Ring Gauge (GO) is a precision tool for quickly verifying external thread diameters against metric fine standards. Its ideal for engineers, machinists, inspectors, and quality teams who need reliable go no go results to confirm part conformity. Designed for right hand threads in the M140 x 4 size with 6g tolerance, this gauge combines rugged durability with accuracy. Manufactured from hardened steel, it stands up to daily use in