JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 4H - M15 x 1 ER Mini Collet Chucks Crafted from high-quality carbide with

Crafted from high-quality carbide with a durable W coating

With its robust HSS-E construction and thoughtful geometry

Built to withstand daily activity in busy shops

A straight shank allows easy clamping in common toolholding systems

Its combination of corner radius versatility

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 4H - M15 x 1 ER Mini Collet Chucks Crafted from high-quality carbide withMeet the JBO Thread Plug Gauge for metric fine threads. This right hand Go No Go gauge is engineered for M15 x 1 holes with 4H tolerance, delivering fast, reliable checks for precision assemblies. It's ideal for engineers, machinists, quality control teams, and maintenance professionals who need confidence that threaded holes will accept components consistently. Designed for everyday shop use, the gauge features a hardened steel body with a textured