JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M18 x 1 Tapping Chucks accurate corners and smoother transitions

accurate corners and smoother transitions

high-quality milling with predictable results

carbide tool engineered to finish through-holes with exceptional size control

high-grade materials for longevity: Built to resist wear and corrosion in busy workshops

Its intermediate precision carbide (k10) construction combines rigidity with long wear life

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M18 x 1 Tapping Chucks accurate corners and smoother transitionsThe JBO Thread Plug Gauge is a precision tool for inspecting internal metric fine threads. It's ideal for machinists, quality control technicians, and assembly teams who need fast, accurate checks of hole threads. Designed for right hand metric threads, this Go No Go gauge is sized for M18 x 1 holes with 6H tolerance. Its hardened steel construction and knurled body withstand daily shop use, delivering repeatable checks you can trust. Go No Go quick