Api 5B PlugMufflers & Exhaust Systems Service & RepairUpdated on Jul 17, 2018 View more like this | Visit ALVIN, TX | Contact Third Coast Gage & Calibration |

Third Coast Gage specializes in the calibration of API 7-2 and API 5B Plug & Ring "Working" thread gages. Reference master gages are on-site in Alvin, TX in accordance with the API Specification 7-2 and API Specification 5B. We are working constantly towards having each master thread gage that you require.