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This document specifies limit deviations and limits of sizes for the pitch and crest diameters of the hot-dip galvanized metric external screw threads conforming to the coarse thread series of ISO 262 (from M8 to M64) having a basic profile according to ISO 68-1. This document is applicable to the hot-dip galvanized metric external screw threads to mate with the internal screw threads tapped with tolerance position H or G after galvanizing.

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This document specifies limit deviations for pitch and crest diameters for ISO general purpose metric screw threads (M) conforming to ISOÂ 261 having basic profile in accordance with ISOÂ 68-1. The limit deviations specified are derived from the fundamental deviations and tolerances specified in ISOÂ 965-1. This document is applicable to ISO general purpose metric screw threads with the recommended tolerance classes.

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This document specifies the basic dimensions of ISO metric trapezoidal screw threads in accordance with 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.

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ISO 2901:2016 specifies the basic and design profiles of ISO metric trapezoidal screw threads. ISO 2901:2016 is chiefly applicable to traversing threads for traversing motion on machines, tools, etc. It can also be used for fastening threads.

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ISO 2903:2016 specifies a tolerance system for metric trapezoidal screw threads in accordance with ISO 2902. The tolerances refer to the design profile in accordance with ISO 2901. The tolerance system does not apply to trapezoidal screw threads with special requirements on axial displacement, for example, machine tool lead and feed screws and nuts.

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ISO 2902:2016 specifies a series of diameter and pitch combinations for ISO metric trapezoidal screw threads having the basic and design profiles according to ISO 2901. ISO 2902:2016 is chiefly applicable to traversing threads for traversing motion on machines, tools, etc. It can also be used for fastening threads.

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ISO 16239:2013 specifies the material, metric series nominal diameters, diameter tolerances, and designation for screw thread measuring wires. ISO 16239:2013 is applicable to measure the pitch diameters of ISO general purpose metric screw threads (M), Unified screw threads (UN), Whitworth pipe threads (G, R), and ISO metric trapezoidal screw threads (Tr) with standard pitches. These wires are intended for use on screw threads with a small lead angle, less than 5°, and mainly used to calibrate the pitch diameters of thread plug gauges.

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ISO 965-1:2013 specifies a tolerance system for ISO general purpose metric screw threads (M) conforming to ISO 261. The tolerance system refers to the basic profile according to ISO 68-1.

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ISO 1501:2009 specifies the profiles, diameter-pitch combinations, basic dimensions, tolerances, limits of size and designation for ISO miniature screw threads with nominal diameters from 0,3 mm to 1,4 mm. These threads are applicable to timepieces, optical instruments, electrical meters, measuring instruments, etc. The profiles and tolerance system for ISO miniature screw threads (S) differ from the profile and tolerance system for ISO general purpose metric screw threads (M).

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ISO 725:2009 specifies the basic dimensions, in inches, of ISO inch screw threads in accordance with ISO 263. The values refer to the basic profile in accordance with ISO 68-2.

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This International Standard specifies ISO general purpose metric screw threads (M) having basic profile according to ISO 68-1. Basic dimensions are given in ISO 724. For tolerances see ISO 965-1.

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This part of ISO 965 specifies deviations and limits of sizes for pitch and crest diameters for ISO general purpose metric internal screw threads conforming to ISO 262 having basic profile according to ISO 68-1. Internal screw threads according to this part of ISO 965 are intended to mate with external screw threads with maximum size of tolerance position h before hot-dip galvanizing. The limits of sizes for the tolerance quality specified are derived from tolerances specified in ISO 965-1. The fundamental deviations for internal screw threads with a tolerance position AZ have been calculated according to the following formula: EIAZ = + (300 + 20P) Where EI is expressed in micrometers. P is expressed in millimeters. The fundamental deviations for internal screw threads with a tolerance position AX have been calculated according to the following formula: EIAX = + (220P - 20) Where EI is expressed in micrometers; P is expressed in millimeters. Products made with thread tolerances according to this part of ISO 965 may show load failure when tested in accordance with ISO 898-2 without adjustment of the other mechanical properties. Internal screw threads with thread tolerances according to this part of ISO 965 must not be mated with external screw threads having thread tolerances according to ISO 965-4 because such combinations will create severe risk of thread stripping. NOTE Internal screw threads with tolerance class 6AZ are primarily intended to mate with external screw threads centrifuged after hot-dip galvanizing. Internal screw threads with tolerance class 6AX are primarily intended to mate with hot-dip galvanized external screw threads with heavy coating not centrifuged.

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This International Standard specifies selected sizes for screws, bolts and nuts in the diameter range from 1 mm to 64 mm of ISO general purpose metric screw threads (M) having basic profile according to ISO 68-1. These selected sizes are recommended also for general engineering use. These screw threads are selected from ISO 261. For thread designations see ISO 965-1.

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This part of ISO 68 specifies the basic profile for ISO inch screw threads.

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This part of ISO 68 specifies the basic profile for ISO general purpose metric screw threads (M).

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Gives details for the manufacture and use of gauges for checking ISO general purpose metric screw threads. Specifies the features of gauges which are recommended for checking external and internal screw threads of workpieces. Provides means of distinguishing between threads that comply with the limits of size and those that do not.

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Specifies a system of allowances and tolerances for standard thread series, covering the range of diameters from 0,06 in to 6 in, and pitches from 80 to 4 threads per inch.

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Specifies the basic dimensions of metric threads in accordance with ISO 261. The basic dimensions are: basic major diameter of internal or external thread (nominal diameter), basic pitch diameter of internal or external thread, basic minor diameter of internal or external thread, height of fundamental triangle, pitch. The values refer to the basic profile in accordance with ISO 68.

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Tabulates inch threads having the basic profile for triangular threads specified in ISO 68; contains sizes in the diameter range between 0.06 to 6 inch, comprising a number of series of diameter/pitch combinations, together with a system of thread designations.

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This part of ISO 965 specifies deviations and limits of sizes for pitch and crest diameters for ISO general purpose metric external screw threads conforming to ISO 262 having a basic profile according to ISO 68-1. External screw threads according to this part of ISO 965 are intended to mate with internal screw threads tapped with tolerance position H or G after hot dip galvanizing. The limits of sizes for the tolerance quality specified are derived from tolerances specified in ISO 965-1 and the fundamental deviations according to the following formula: esaz = 2(300 + 20P) where es is expressed in micrometers; P is expressed in millimeters. Products made with thread tolerances in accordance with this part of ISO 965 may show failure at lower ultimate tensile loads than those specified in ISO 898-1 due to reduction of the stress area. External screw threads with thread tolerances according to this part of ISO 965 must not be mated with internal screw threads with thread tolerances according to ISO 965-5 because such combinations will create severe risk for thread stripping. NOTE If the tolerance class 6az is not specified the external screw threads are to mate with internal screw threads with tolerance position 6AZ if the products are centrifuged and with hot-dip galvanized internal screw threads with tolerance position 6AX if the products are not centrifuged.

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This part of ISO 965 specifies deviations for pitch and crest diameters for ISO general purpose metric screw threads (M) conforming to ISO 261 having basic profile according to ISO 68-1. The deviations specified are derived from the fundamental deviations and tolerances specified in ISO 965-1.

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Specifies a tolerance system for threads according to ISO 2902; the system does not apply to threads with special requirements on axial displacement (e.g. lead screws); gives the structure of the system and tabulates pitches from 1.5 up to and including 44, comprises basic major diameters over 5.6 mm up to and including 355 mm; includes recommended tolerance classes for bolt and nut threads.

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Specifies the theoretical profile associated with the basic sizes of the major, pitch and minor diameters of the thread; the deviations are applied to these basic sizes; contains tabels and figures with metric dimensions.

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Provides fundamental terms and definitions in English and French applicable to threads with profiles (in an axial plane) based on triangles; a list of Russian equivalent terms is given in annex A; the annexes B and C include the equivalent terms in German and Italian.

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Specifies a series of diameter and pitch combinations for threads having the basic profile according to ISO 2901; tabulates nominal diameters from 8 mm up to and including 300 mm together with the associated pitches ranging from 1.5 to 44.

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Specifies the dimensions for threads according to ISO 2902; the values refer to the basic profiles according to ISO 2901; shows the formulae for calculations; tabulates nominal diameters from 8 mm up to and including 300 mm with pitches from 1.5 to 44 together with the associated pitch, major and minor diameters.

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