JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M33 x 1 FHH high-quality finishes from first cut

high-quality finishes from first cut to final pass

Built around a carbide-tipped cutting edge (K10) and a taper shank for secure toolholding

Necked geometry for deep

and consistent hole size during finishing passes

00 mm bores with hand operation

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M33 x 1 FHH high-quality finishes from first cutJBO Thread Plug Gauge is a precision internal thread inspection tool designed for metric fine threads. Its ideal for technicians, machinists, and quality teams who need fast, reliable checks to confirm that M33 x 1 left hand holes meet 6H tolerance. The Go No Go design delivers quick pass fail results, helping you verify fit before assembly while withstanding daily shop use thanks to hardened steel construction. Go No Go quick checks: Instantly verify