The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the. Partie 1: Principes et donnĂ©es fondamentales. STANDARD. ISO. Fourth edition. Reference number. ISO (E). This is a free 5 page . Buy DIN ISO ISO GENERAL PURPOSE METRIC SCREW THREADS – TOLERANCES – PART 1: PRINCIPLES AND BASIC DATA.

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This standard is not included in any packages. Please first verify your email before subscribing to alerts. Standards Subsctiption may be the perfect solution. The theoretical profile of a screw thread in an axial plane defined by theoretical dimensions and angles common to internal and external threads.

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The minimum diameter of a thread which is diameter of the root of a male thread or crest of a female thread. Internal thread maximum minor diameter [D 1max ]. For external bolt threads; The actual root contours iiso not at any point transgress the basic profile. After coating, the actual thread profile shall not at any point transgress the maximum material limits for positions h or H.

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Height of fundamental triangle [H]. External thread maximum minor diameter [d 3max ]. Thread basic minor diameter [d 1D 1 ].


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Minor diameter tolerance of internal thread. Proceed to Checkout Continue Shopping. Internal thread minimum major diameter [D min ]. You may delete a document from your Alert Profile at any time. 96-51 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.

Pitch diameter tolerance of internal thread.

If the document is revised or amended, you will be notified by email. External bolt thread root profile is given the “Definitions” section. The list of metric screw thread used in general engineering applications are given in the General Purpose Metric Screw Threads Table.


Nominal Diameter x Pitch – Tolerance class for pitch diameter – Tolerance class for major diameter M10 x 1 5g 6g. General Engineering Use Custom Use.

In addition to basic size calculations of metric threads, tolerance calculations of different tolerance classes can be done according to ISO Thread basic pitch diameter [d 2D 2 ]. External thread minimum major diameter [d min ]. Pitch diameter tolerance of external thread. Tolerance Class for Bolt. Tolerance class can 96-51 selected among the alternatives 6e, 6f, 6g and 4h for bolts and 5H, 6H, 7H and 6G for nuts.


Internal thread minimum minor diameter [D 1min ].

Add to Alert PDF. For usage of the other classes, refer to ISO External thread minimum truncation [C min ]. Metric thread size and tolerance calculator was developed to calculate major, minor and pitch diameters of the external bolt and internal nut metric threads according to ISO The tolerance system refers to the basic profile according to ISO This standard is also available to be included in Standards Subscriptions.

External thread minimum pitch diameter [d 2min ].

Metric Thread Size and Tolerance Calculator

The user shall use 6g for bolts and 6H for nuts unless there is a specific requirement to use other tolerance classes. Tolerance Class for Nut. External thread minimum minor diameter [d 3min ]. For more information on Metric screw threads including thread form, definitions, limits and fits for threads, standard series and combinations, thread designation, basic dimensions, dih effect of coating, formulas and details of MJ profile, please refer to pages – of Machinery’s Handbook, 30th.

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