JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M30 x 2 FMH consistent surface finish on stainless

consistent surface finish on stainless and exotic alloys

The straight shank offers stable alignment in fixtures

stub‑length form factor

With a straight shank and a left-hand spiral flute paired with right-hand cutting

it uses a left-hand spiral flute with right-hand cutting for stable

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M30 x 2 FMH consistent surface finish on stainlessThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. This left hand gauge covers M30 x 2 with a 6H tolerance, making it ideal for assemblies where exact thread fit matters. Its a practical choice for machine shops, quality labs, and maintenance teams that need reliable go no go hole checks in tight tolerance work. With its Go No Go design, you can quickly verify whether a threaded hole meets spec, reducing setup