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Oversize UNC / UNF Thread Plug Gauges 2B – GO / NO-GO

Oversize UNC / UNF Thread Plug Gauges

GO / NO-GO plug gauges for checking internal threads with the oversize allowance specified in the selected variant. Available in UNC and UNF sizes, tolerance class 2B, with +0.03 or +0.05 designations.

  • Select the thread size, standard and oversize allowance required by your drawing.
  • Each variant is a GO / NO-GO gauge.
  • G1455 is an STI / Helicoil gauge for inspecting the tapped hole before fitting a wire thread insert. It is not interchangeable with a conventional UNC thread gauge.