JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M3.5 x 0.5 End Mill Holders Taper shank with left-hand spiral

Taper shank with left-hand spiral flute: Secure mounting in compatible holders and stable cutting performance

Tapered ball nose for smooth contours: Delivers accurate radii and clean profiles on complex shapes

or tackling precision milling

With a straight shank and stub-length body

repeatable checks for the correct part fit

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M3.5 x 0.5 End Mill Holders Taper shank with left-hand spiralThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, engineered to verify internal holes with confidence. It targets applications that require exact M3. 5 x 0. 5 thread engagement and a right hand orientation, delivering quick, reliable checks for production and quality control teams. With a Go No Go design, you can determine at a glance whether a hole meets specificationpass and move forward, or rework and