High-pressure sensor and its manufacturing method

High pressure sensor has one-piece body with blind opening (54) with first region of greater width at its open end with internal thread, second region of smaller width at its end (60) closed by membrane (76) and conical transition between regions. Connector piece is screwed into the internal thread forming high pressure threaded joint. Connector piece and measurement body screw coupling is secured by rotation lock. AN Independent claim is also included for a method of manufacturing the device.