JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6G - M9 x 1 ER Mini Collet Chucks DIN 8089 compliance and the

DIN 8089 compliance and the M35 cobalt composition provide reliable wear resistance

77mm is a precision straight-shank reamer designed to size holes to a tight 2

while the DIN 8051 B geometry and ISO H5 tolerance ensure consistent results across production runs

Substrate: HSS-E (M35 cobalt) construction

Its robust geometry and coating work together to minimize built-up edge and extend tool life

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6G - M9 x 1 ER Mini Collet Chucks DIN 8089 compliance and theThe JBO Thread Plug Gauge is a precision Go No Go tool designed for metric fine threads. It helps machinists, inspectors, and assembly teams quickly verify threaded holes so parts fit together accurately and consistently. Built with hardened steel and configured specifically for Right Hand M9 x 1 fine threads in 6G class, this gauge is built to endure repeated use in busy workshops while maintaining reliable performance. Go No Go design for fast,