JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Right Hand - 4H - M20 x 2.5 NCDC Drill Chuck Left-hand spiral flute with right-hand

Left-hand spiral flute with right-hand cutting: Optimized chip evacuation and stable cutting behavior for smooth

helping you achieve smooth bore finishes and reliable hole geometry

and improves surface finish in a variety of through-hole applications

reducing runout and improving thread quality across every hole

78 mm delivers precise hole finishing to ISO H4 tolerance in demanding materials

JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Right Hand - 4H - M20 x 2.5 NCDC Drill Chuck Left-hand spiral flute with right-handThe JBO Thread Plug Gauge is a Go No Go inspection tool calibrated specifically for metric coarse threads. Its ideal for engineers, machinists, quality teams, and even advanced hobbyists who need to verify threaded holes quickly and confidently, ensuring that parts fit precisely and function as intended. Designed for M20 x 2. 5 coarse thread holes, this gauge features right hand orientation and a 4H tolerance to align with standard components. Crafted