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ISO GENERAL PURPOSE METRIC SCREW THREADS. Limits of Sizes for Bolt and Nut Threads. Reference # ISO /, # ISO / Coarse and. 7 Jan Part 1: Principles and basic data (ISO , IDT) The International Standard ISO has the status of a Swedish Standard. 15 Dec International Standard ISO was prepared by Technical Committee ISO/TC 1, Screw threads, Subcommittee. SC 2, Tolerances. This third.

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iso 965-1 Internal thread minimum major diameter [D min ]. The list of metric screw thread used in iso 965-1 engineering applications are given isso the General Purpose Metric Screw Threads Table.

Tolerance class can be selected among the alternatives 6e, 6f, 6g and 4h for bolts and 5H, 6H, 7H and 6G for nuts.

Details for the manufacture and use iso 965-1 gauges for checking ISO general-purpose metric screw threads are specified in the ISO The surface at iso 965-1 top of the ridge connecting its two flanks. External thread maximum minor diameter [d 3max ].


External thread maximum pitch diameter [d 2max ]. Nominal Diameter x Pitch – Tolerance class for pitch diameter – Tolerance class for major diameter M10 x 1 5g 6g. Internal thread maximum pitch diameter [D iso 965-1 ]. Tolerance Class for Bolt.

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Minor diameter iso 965-1 of internal thread. Pitch diameter tolerance of external thread. External bolt thread root profile is given the “Definitions” section.

Internal thread minimum minor diameter lso 1min ]. Thread basic minor diameter [d 1D 1 ]. Iso 965-1 this tolerance class for commercial internal threads. General Engineering Use Custom Use. Iso 965-1 thread minimum major diameter [d min ].

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Tolerance Class for Nut. Major diameter tolerance of external thread. The theoretical profile of a screw thread in an axial plane defined by theoretical dimensions and angles common to internal and external threads. External thread minimum truncation [C min iso 965-1. In general engineering use, calculations can be done by selecting a standard metric thread size iso 965-1 the list which contains metric thread sizes in the diameter range from 1.

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In custom iso 965-1, thread size, pitch and tolerance classes can be independently selected for custom engineering calculations. The user shall use 6g for bolts and 6H for nuts unless there is a specific requirement to use other tolerance classes. The iso 965-1 at the bottom of the groove connecting the adjacent flanks. Pitch diameter tolerance of internal thread. External thread maximum truncation [C max ].

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External thread minimum pitch diameter [d 2min ]. The maximum diameter of a thread which is diameter of the crest of a male thread iso 965-1 root of a female thread.

External thread minimum minor diameter [d 3min ]. For coated threads, the tolerances apply to the parts before coating, unless otherwise stated. For usage of the other classes, refer to ISO Fasteners of property class 8. AmesWeb Calculators Screw Threads. 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 Internal thread iso 965-1 minor iso 965-1 [D 1max ].

External thread maximum major diameter [d max ]. Internal thread minimum pitch diameter iso 965-1 2min ].