Gage Assembly manufactures many different types of special thread gages. These special fixed limit plug and ring thread gages are designed to provide an accurate functional thread check of threaded components. The gages will determine if the threaded component of the part is in or out of tolerance. Gage Assembly manufactures gages to the following ANSI thread series designations: ACME, BUTTRESS, Metric, NPT, ANPT, NPSM, NH, British BSW, UNM, DIN, JIS, UN, UNS. These are just a few Special thread forms we manufacture. We also manufacture pre-plate thread plugs and rings, extra length threads, solid rings, concentricity plugs and rings, hard chrome gages, Left Hand gages, and much more! Specials can be manufactured to correctly gage parts to your part or gage drawings as required. Please contact us for a quote or more information.