JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Left Hand - 6H - M4.5 x 0.75 Boring Bar Blank it offers dependable wear resistance

it offers dependable wear resistance for repeated cycles in typical mold/die materials

The 6-flute configuration provides efficient chip evacuation and a stable cutting action

helping maintain surface quality and reducing heat buildup during extended machining sessions

ISO H4 tolerance (DIN 8093): Delivers precise hole sizing with reliable interchange across production runs

please allow 24-48 hours for despatch

JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Left Hand - 6H - M4.5 x 0.75 Boring Bar Blank it offers dependable wear resistanceThe JBO Thread Plug Gauge is a precision go no go tool designed to verify metric coarse threads inside tapped holes. This Left Hand model matches M4. 5 x 0. 75 coarse thread specifications and provides fast, reliable checks to confirm proper fitment in assembled components. Built for engineers, machinists, and assembly teams, the gauge helps you quickly decide whether a hole is within toleranceaccepting the go end and rejecting the no go endso you can