BS ISO 2904:2020 pdf free

04-20-2021 comment

BS ISO 2904:2020 pdf free.IS0 metric trapezoidal screwthreads — Basic dimensions.
ISO (the International Organization for Standardization) is a worldwide federation of national standardsbodies (IS0 member bodies).The work of preparing International Standards is normally carried outthrough IS0 technical committees.Each member body interested in a subject for which a technicalcommittee has been established has the right to be represented on that committee. Internationalorganizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISOcollaborates closely with the International Electro technical Commission (IEC) on all matters of electrotechnical standardization.Any trade name used in this document is information given for the convenience of users and does notconstitute an endorsement.
This document specifies the basic dimensions of lS0 metric trapezoidal screw threads in accordancewith ISO 2902. The values refer to the design profiles in accordance with ISO 2901.
This document is chiefly applicable to traversing threads for traversing motion on machines, tools, etc.It can also be used for fastening threads.
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.
For the purposes of this document, the terms and definitions given in ISO 5408 apply.
ISO and lEC maintain terminological databases for use in standardization at the following addresses:
ISO online browsing platform: available at
IEC Electropedia: available at http;:.//
For the purposes of this document, the following symbols apply.Dbasic minor diameter of internal thread.basic pitch diameter of internal threadD4basic major diameter of internal thread.basic major diameter of external thread (nominal diameter).basic pitch diameter of external threadd3basic minor diameter of external threadPpitch.clearance at major and minor diameters.radius on crest corners of external thread on design profile.radius on root corners of internal and external threads on design profile.BS ISO 2904 pdf download.

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