JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M17 x 0.5 NCDC Drill Chuck minimizing runout and tool deflection

minimizing runout and tool deflection for consistent results across jobs

this ER40 collet helps you keep tolerances tight

supporting reliable finishes in production or workshop settings

with final reamer produced to your order specifications

reducing search time and drop risk

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M17 x 0.5 NCDC Drill Chuck minimizing runout and tool deflectionThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. It helps engineers, machinists, inspectors, and assembly teams quickly verify that internal threaded holes meet the exact size requirements. Built for durable performance, this left hand Go No Go gauge uses a precise M17 x 0. 5 thread form and 6H tolerance to confirm fit and clearances. Crafted from hardened steel, it delivers long lasting accuracy in busy