Plug Gauges

Plug gauges (GO/NO-GO pins) are fixed-limit standards used to quickly verify hole diameter and tolerance without reading a scale. They support fast in-process and final inspection to confirm a bore is within specification.

Available as sets or individual pins, in metric/inch sizes, with different tolerance classes and lengths, including double-ended GO/NO-GO styles. Options include hardened steel or carbide for wear resistance, from Insize, Ultra & Preisser.

Well suited for machine shops, CNC production and QC departments where repeatability and speed matter. Choose based on nominal size, tolerance grade and expected wear.