Method for design respective manufacture of threads in a threaded member, a threaded member manufactured according to the method, and a bolted joint including such a member

摘要

The invention relates to a method in the formation of threads of a thread-provided element intended to be included as one of two thread-provided parts in a bolted joint. The bolted joint comprises a part (2) having an internal thread and a part (1) having an external thread, and the threads of the respective parts are initially formed according to the ISO and/or Unified basic profile having an initial play in both the radial and axial direction, when said parts are tightened together. The invention is characterized in that the threads of said thread-provided element are formed so that an additional play (ΔS_a) between said two thread-provided parts is obtained in the axial direction, at the same time as said initial play in radial direction remains substantially unaltered, the part of the bolted joint which consists of the thread-provided element no longer having ISO/Unified basic profile. The invention also relates to a method for the manufacture of threads, as well as corresponding thread-provided element and bolted joint.