ISO metric screw threads are the world-wide most commonly used type of general-purpose screw thread.

Standard Tolerance: Plug 6H

A wide range of GO/NO-GO fixed gauges are available for checking inside and outside threaded diameters, so as to ensure accuracy during the machining process. This ensures a “snug” fir between threaded components, which in turn phases out the loosening of screw-fastened joints in your final work piece.


What Thread Plug Checks?

  • A thread plug GO Gauge checks the minimum major diameter the minimum pitch diameter size in a part.
  • A thread plug NO-GO gauge checks for the hole not to exceed the maximum pitch diameter size in a part.

Made Of:

  • Tempered, Oil Hardened Tool Steel.

Supplied As:

  • Double Ended.
  • Member Only.


  • Thread Tolerance Class: 4、5、6、7、8.
  • Thread Tolerance Internal Thread G,H
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