ISO 965-1 PDF

ISO specifies a tolerance system for ISO general purpose metric screw threads (M) conforming to ISO The tolerance system refers to the basic. ISO ISO general-purpose metric screw threads — Tolerances — Part 1: Principles and basic data. Thisstandardhas been revised by ISO ISO GENERAL PURPOSE METRIC SCREW THREADS. Limits of Sizes for Bolt and Nut Threads. Reference # ISO /, # ISO / Coarse and.

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The tolerance system refers to the basic profile in accordance with ISO Internal thread maximum minor diameter [D 1max ].

If the actual length of thread engagement recommended. Limits of sizes for general purpose external and internal screw threads — Medium quality ISOScrew threads — Vocabulary Page 2, 3.

The user shall use 6g 9651- bolts and 6H for nuts unless there is a specific requirement to use other tolerance classes. For usage of the other classes, refer to ISO Tolerance Class for Bolt.

Internal thread minimum pitch diameter [D 2min ]. Major diameter tolerance of external thread. This Committee, responsible for the preparation of Indian Standards revise all the six Parts of IS in the following manner: Tolerance classes in ordinary lso are second choice.

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The value for other grades are obtained from the TD1 6 -values in table 3 according to the table below. Part 2 General plan second revision metric screw do ISO Page 18 Add the following bibliography at the end of the document uso M10 x 1 6g.


External thread maximum truncation [C max ]. Part 3 Deviations metric screw do for constructional screw threads ISO Size px x x x x Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. In the adopted standard, certain conventions are not identical to those used in Indian Standard. The values for pitch and crest diameter tolerances and for fundamental deviations have been calculated from the formulae and then rounded off to the nearest value in the Ff 40 series of preferred numbers.

External thread minimum truncation [C min ]. For the pitch diameter tolerance of external thread Td2 there are seven tolerance grades 3, 4, 5, 6, 7, 8 and 9, in accordance with table 6. Tolerance Class for Nut. In each case, grade 6 shall be used for tolerance quality medium and normal length of thread engagement. Tolerance classes other than those shown in clause 12 are not recommended and shall only be used for special cases.

In general engineering use, calculations can be done by selecting a standard metric thread size from the list which contains metric thread sizes in the diameter range from 1. Copyright BIS has the copyright of all its publications.


Details for the manufacture and use of gauges for checking ISO general-purpose metric screw threads are specified in the ISO Tolerance classes in bold print are first choice. Part 5 Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing Indian Standards except tolerances covering the various are listed below: Part 2 Limits of sizes for general threads — Tolerances purposes external and internal screw threads — Medium quality ISO All standards are subject to revision, and parties to agreements based on this part of ISO are encouraged to investigate the possibility of applying the most recent editions of the standards Indicated below.


The value for the other 9665-1 are obtained from the Td2 6 -values see table 6 according to the table below.

At the time of publication the editions indicated were valid. The corresponding Indian Standards which are to be substituted in their place are listed below along with their degree of 9651- for the editions indicated: The maximum diameter of a thread which is diameter of the crest of a male thread or root of a female thread.

After coating, the actual thread profile shall not at any point transgress the maximum material limits for positions H or h. General Engineering Use Custom Use. For coated threads, the tolerances apply to the parts before coating, unless otherwise stated. Limits of sizes — Pari 3: External thread minimum pitch diameter [d 2min ].

External thread maximum minor diameter [d 3max ]. Thank you for interesting in our services. The other isl parts of the standard are listed below: Part 4 Limits of sizes for hot-dip galvanized external screw threads to mate with internal screw threads tapped with tolerance position H or G after galvanizing IS Part 5: