JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Right Hand - 6H - M8 x 1.25 RPTECH Ground geometry: Hollow ground to

Ground geometry: Hollow ground to bore for side clearance

ISO H5 tolerance (D) supports tight size control for accurate assemblies

it fits standard toolholders and delivers repeatable results in production or workshop environments

reducing clogging and heat buildup for smoother cuts and steadier feeds

The durable HSS-E construction stays sharp over time

JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Right Hand - 6H - M8 x 1.25 RPTECH Ground geometry: Hollow ground toThe JBO Thread Plug Gauge is a right hand, go no go gauge designed to verify internal metric coarse threads, specifically M8 x 1. 25, with a 6H tolerance. It delivers quick, reliable checks to ensure threaded holes accept fasteners as intended and assemblies fit properly. Built for everyday use in workshops, production lines, and quality control labs, this gauge helps teams confirm thread integrity with confidence. Made from hardened steel, this gauge