JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M140 x 4 M&D 5 threads meet the exact

5 threads meet the exact 6H tolerance in a straightforward go/no-go check

Leak‑resistant geometry with broad clamping range (3–26 mm): Non-overlapping longitudinal slots prevent coolant loss while accommodating a wide range of round shank tooling

Stock note: If listed as “in stock

Concentricity you can feel: Precision engineering yields uniform gripping force around the shank

5 mm for controlled cutting in tight radii

JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M140 x 4 M&D 5 threads meet the exactThe JBO Thread Plug Gauge (GO) is a precision inspection tool designed to verify threaded holes to metric fine standards. It is ideal for engineers, machinists, quality inspectors, and workshop technicians who need reliable hole verification for M140 x 4 threads and 6H tolerance. Built from hardened steel for lasting performance, the GO gauge features a knurled body for secure handling and a compact form that fits easily into a tool kit. It supports