JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 4H - M12 x 1.25 NCDC Drill Chuck Its durable build and designed-for-purpose

Its durable build and designed-for-purpose geometry translate to more predictable outcomes

predictable hole size that reduces rework and improves fit in assembled parts

Long shank for deep grooves: Extended reach and rigidity allow clean

Tapered Neck for Rigidity and Stable Deep Grooves: The tapered neck design increases stiffness and minimizes deflection during demanding cuts

90 mm nominal reamer size for precise bore finishing

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 4H - M12 x 1.25 NCDC Drill Chuck Its durable build and designed-for-purposeThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, specifically tailored for right hand M12 x 1. 25 applications with a 4H tolerance. Its ideal for machinists, quality inspectors, and maintenance technicians who need fast, reliable checks to ensure threaded holes will accept components cleanly and consistently. Built for daily workshop use, this gauge combines a robust, hardened steel construction with a