JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M34 x 1.5 ER Mini Collet Chucks —a trusted source of precision

—a trusted source of precision tooling

The 8 mm bore and 100 mm gauge length make it compatible with a wide range of standard end mills

Built with a carbide substrate and an advanced coating

provides predictable results for fixtures

it provides reliable performance across a range of materials

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M34 x 1.5 ER Mini Collet Chucks —a trusted source of precisionThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, ensuring accurate verification of threaded holes in critical assemblies. Built as a right hand gauge with M34 x 1. 5 size and 6H tolerance, it is ideal for machine shops, maintenance teams, and quality control environments where consistent thread fit matters. Designed for fast, unambiguous checks, the Go No Go design lets you confirm whether a hole is within