JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M33 x 1 FHH With a 4 mm diameter

With a 4 mm diameter and 35 mm overall length

and consistent hole size during finishing passes

Necked geometry for deep

00 mm bores with hand operation

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M33 x 1 FHH With a 4 mm diameterJBO 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