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21.040.10 - Metric screw threads

ICS 21.040.10 Details

Metric screw threads

Metrische Gewinde

Filetages métriques

Metrski navoji

General Information

Parent
21.040 - Screw threads

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Standardization Organization
Technical Committee
Directive
Mandate
50
ISO
ISO 724:2023(Main)
ISO general purpose metric screw threads — Basic dimensions

This document specifies the basic dimensions of ISO general purpose metric screw threads according to ISO 261. The values refer to the design profiles according to ISO 68-1. This document is applicable to the metric fastening screw threads.

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ISO
ISO 262:2023(Main)
ISO general purpose metric screw threads — Selected sizes for bolts, screws, studs and nuts

This document specifies the selected sizes for bolts, screws, studs and nuts in the diameter range from 1 mm to 100 mm of ISO general purpose metric screw threads (M) having the basic and design profiles according to ISO 68-1. These sizes of diameter and pitch combinations are selected from ISO 261. This document is applicable to the metric commercial fastener screw threads.

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SIST
SIST EN ISO 8765:2022(Main)
Fasteners - Hexagon head bolts, with fine pitch thread - Product grades A and B (ISO 8765:2022)
EN ISO 8765:2022

This document specifies the characteristics of hexagon head bolts, in steel and stainless steel, with
metric fine pitch threads M8×1 to M64×4, and with product grades A and B.
If in certain cases other specifications are requested, property classes and stainless steel grades can be
selected from ISO 898-1 or ISO 3506-1, and dimensional options from ISO 888 or ISO 4753

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SIST
SIST EN ISO 8676:2022(Main)
Fasteners - Hexagon head screws, with fine pitch thread - Product grades A and B (ISO 8676:2022)
EN ISO 8676:2022

This document specifies the characteristics of hexagon head screws, in steel and stainless steel, with
metric fine pitch threads M8×1 to M64×4, and with product grades A and B.
If in certain cases other specifications are requested, property classes and stainless steel grades can be
selected from ISO 898-1 or ISO 3506-1, and dimensional options from ISO 888 or ISO 4753.

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ISO
ISO 965-1:2013/Amd 1:2021(Amendment)
ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data — Amendment 1
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ISO
ISO 965-4:2021(Main)
ISO general purpose metric screw threads — Tolerances — 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

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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ISO
ISO 965-5:1998/Amd 1:2021(Amendment)
ISO general purpose metric screw threads — Tolerances — 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 — Amendment 1
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ISO
ISO 965-2:1998/Amd 1:2021(Amendment)
ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general purpose external and internal screw threads — Medium quality — Amendment 1
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ISO
ISO 965-3:2021(Main)
ISO general purpose metric screw threads — Tolerances — Part 3: Limit deviations for screw threads

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

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ISO
ISO 2904:2020(Main)
ISO metric trapezoidal screw threads — Basic dimensions

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
ISO 68-1:1998/Amd 1:2020(Amendment)
ISO general purpose screw threads — Basic profile — Part 1: Metric screw threads — Amendment 1
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CEN
EN ISO 11381:2016(Main)
Ophthalmic optics - Spectacle frames - Screw threads (ISO 11381:2016)
SIST EN ISO 11381:2017

ISO 11381:2016 specifies requirements for ISO metric screw threads for use with spectacle frames. Provision is made for screw threads of the following nominal sizes: S0,8 × 0,2; M1,0 × 0,25; M1,2 × 0,25; M1,4 × 0,3; M1,6 × 0,35 and M2,0 × 0,4 and for related taps and gauges.

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SIST
SIST EN ISO 11381:2017(Main)
Ophthalmic optics - Spectacle frames - Screw threads (ISO 11381:2016)
EN ISO 11381:2016

This International Standard specifies requirements for ISO metric screw threads for use with spectacle
frames. Provision is made for screw threads of the following nominal sizes: S0,8 × 0,2; M1,0 × 0,25;
M1,2 × 0,25; M1,4 × 0,3; M1,6 × 0,35 and M2,0 × 0,4 and for related taps and gauges.

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ISO
ISO 2901:2016(Main)
ISO metric trapezoidal screw threads — Basic and design profiles

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
ISO 2903:2016(Main)
ISO metric trapezoidal screw threads — Tolerances

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
ISO 2902:2016(Main)
ISO metric trapezoidal screw threads — General plan

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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SIST
SIST EN ISO 8674:2014(Main)
Hexagon nuts, style 2, with metric fine pitch thread - Product grades A and B (ISO 8674:2012)
EN ISO 8674:2012

This International Standard specifies the characteristics of hexagon high nuts (style 2) with metric fine pitch thread, with nominal thread diameters, D, from 8 mm up to and including 36 mm, with product grade A for sizes D ≤ 16 mm and product grade B for sizes D > 16 mm. If, in special cases, specifications other than those listed in this International Standard are required, they can be selected from existing International Standards, for example ISO 724, ISO 898-2, ISO 965-1 and ISO 4759-1.

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ISO
ISO 965-1:2013(Main)
ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data

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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SIST
SIST EN ISO 8673:2013(Main)
Hexagon nuts, style 1, with metric fine pitch thread - Product grades A and B (ISO 8673:2012)
EN ISO 8673:2012

This International Standard specifies the geometry of hexagon nuts with nominal thread diameter from 8 mm up to and including 64 mm and the mechanical properties of hexagon regular nuts (style 1) with metric fine pitch thread in product grade A for nominal thread diameters 8 mm ≤ D ≤ 16 mm and in product grade B for nominal diameters 16 mm < D ≤ 39 mm. If, in special cases, specifications other than those listed in this International Standard are required, they can be selected from existing International Standards, for example ISO 724, ISO 898-2, ISO 965-1, ISO 3506-2 and ISO 4759-1. NOTE As there is an insufficient nut height due to the fine pitch thread, there is a higher probability of nut thread stripping. Hence, high nuts (style 2) according to ISO 8674 are preferably used.

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SIST
SIST EN ISO 8675:2013(Main)
Hexagon thin nuts chamfered (style 0) with metric fine pitch thread - Product grades A and B (ISO 8675:2012)
EN ISO 8675:2012

This International Standard specifies the characteristics of chamfered hexagon thin nuts (style 0), with metric fine pitch thread, with nominal thread diameters, D, from 8 mm up to and including 64 mm, with product grade A for sizes D ≤ 16 mm and product grade B for sizes D > 16 mm. If, in special cases, specifications other than those listed in this International Standard are required, they can be selected from existing International Standards, for example ISO 724, ISO 898-2, ISO 965-1, ISO 3506-2 and ISO 4759-1.

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SIST
SIST EN ISO 10513:2013(Main)
Prevailing torque type all-metal hexagon high nuts with metric fine pitch thread - Property classes 8, 10 and 12 (ISO 10513:2012)
EN ISO 10513:2012

This International Standard specifies the characteristics of prevailing torque type all-metal hexagon high nuts with metric fine pitch thread, with nominal thread diameters, D, from 8 mm up to and including 36 mm, in product grade A for sizes D up to and including 16 mm and product grade B for sizes D above 16 mm, and with property classes 8, 10 and 12.

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SIST
SIST EN ISO 10512:2013(Main)
Prevailing torque type hexagon regular nuts (with non-metallic insert) with metric fine pitch thread - Property classes 6, 8 and 10 (ISO 10512:2012)
EN ISO 10512:2012

This International Standard specifies the characteristics of prevailing torque type hexagon regular nuts (with non-metallic insert) with metric fine pitch thread with nominal thread diameters, D, from 8 mm up to and including 36 mm, in product grade A for sizes D up to and including 16 mm and product grade B for sizes D above 16 mm, and with property classes 6, 8 and 10. If other specifications are required, they can be selected from existing International Standards, for example ISO 261, ISO 724, ISO 898-2, ISO 965-2, ISO 2320 and ISO 4759-1.

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CEN
EN ISO 4753:2011(Main)
Fasteners - Ends of parts with external ISO metric thread (ISO 4753:2011)
SIST EN ISO 4753:2012

ISO 4753:2011 specifies the form and dimensions of ends of parts with external ISO metric screw thread (e.g. bolt, screw and stud ends) recommended for use. They apply to standardized or non-standardized threaded parts.
For each end type, a symbol is specified and it is intended that  these symbols be used when specifying one of the ends for threaded fasteners.

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SIST
SIST EN ISO 12474:2012(Main)
Hexagon socket head cap screws with metric fine pitch thread (ISO 12474:2010)
EN ISO 12474:2010

This International Standard specifies the characteristics of hexagon socket head cap screws with metric fine pitch thread with nominal thread diameters, d, from 8 mm up to 36 mm and product grade A. For approximate masses of screws, see Annex A.

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SIST
SIST EN ISO 4753:2012(Main)
Fasteners - Ends of parts with external ISO metric thread (ISO 4753:2011)
EN ISO 4753:2011

This International Standard specifies the form and dimensions of ends of parts with external ISO metric screw thread (e.g. bolt, screw and stud ends) recommended for use. They apply to standardized or non-standardized threaded parts. For each end type, a symbol is specified and it is intended that these symbols be used when specifying one of the ends for threaded fasteners.

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SIST
SIST EN 14219:2004/AC:2007(Corrigendum)
Hexagon bolts with flange with metric fine pitch thread - Small series (ISO 15072:1999, modified)
EN 14219:2003/AC:2007

TC - Modification to Figure 2

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SIST
SIST EN 14219:2004(Main)
Hexagon bolts with flange with metric fine pitch thread - Small series (ISO 15072:1999, modified)
EN 14219:2003

This European Standard specifies the characteristics of hexagon bolts with flange with metric fine pitch thread, small series, with product grade A, with nominal thread diameters from 8 mm up to and including 16 mm and property classes 8.8, 9.8, 10.9, 12.9 and A2-70.
If, in special cases, specifications other than those listed in this European Standard are required, they shall be selected from existing European and International Standards, for example ISO 261 ISO 724, ISO 888, EN ISO 898-1, ISO 965-2, EN ISO 3506-1.

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SIST
SIST ISO 68-1:2002(Main)
ISO general purpose screw threads -- Basic profile -- Part 1: Metric screw threads
ISO 68-1:1998

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

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SIST
SIST EN 22857:2002(Main)
Ground thread taps for ISO metric threads of tolerances 4H to 8H and 4G to 6G coarse and fine pitches - Manufacturing tolerances on the threaded portion (ISO 2857:1973 + A1:1984 +A2:1986)
EN 22857:1989

Is valid for the short taps specified in ISO 529 as well as for any other kind of ground thread taps with the same diameters and pitches. The internal threads produced with those taps are conventionally designated by the simplified denomination of "nut" in agreement with the word used in ISO 965 for the general designation of all internal threads.

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SIST
SIST EN 1666:2001(Main)
Prevailing torque type hexagon nuts with flange (with non-metallic insert) with metric fine pitch thread (ISO 12125:1997, modified)
EN 1666:1997

This European Standard specifies the characteristics of prevailing torque type hexagon nuts with flange, with non-metallic annular insert and metric fine pitchthread with nominal thread diameters from 8 up to and including 20 mm, in product grade A for sizes d up to and including 16 mm and product grade B for sizes d > 16 mm and property classes 6, 8 and 10.

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SIST
SIST EN 1667:2001(Main)
Prevailing torque type all-metal hexagon nuts with flange metric fine pitch thread (ISO 12126:1997, modified)
EN 1667:1997

This European Standard specifies the characteristics of prevailing torque type all metal hexagon nuts with flange and metric fine pitch thread with nominal thread diameters from 8 up to and including 20 mm, in product grade A for sizes d up to and including 16 mm and product grade B for sizes d > 16 mm and propertyclasses 6, 8 and 10.

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ISO
ISO 965-2:1998(Main)
ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general purpose external and internal screw threads — Medium quality
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ISO
ISO 965-5:1998(Main)
ISO general purpose metric screw threads — Tolerances — 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

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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ISO
ISO 68-1:1998(Main)
ISO general purpose screw threads — Basic profile — Part 1: Metric screw threads
SIST ISO 68-1:2002

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

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ISO
ISO 261:1998(Main)
ISO general purpose metric screw threads — General plan

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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SIST
SIST ISO 1502:1998(Main)
ISO general-purpose metric screw threads -- Gauges and gauging
ISO 1502:1996

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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SIST
SIST ISO 4755:1996(Main)
Fasteners -- Thread undercuts for external metric ISO threads
ISO 4755:1983

Lays down the form and dimensions of undercuts for bolts, screws and similar externally threaded products, recommended for use in those cases where it is needed for components such as plugs.

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SIST
SIST ISO 3508:1996(Main)
Thread run-outs for fasteners with thread in accordance with ISO 261 and ISO 262
ISO 3508:1976

Specifies for fully threaded screws with machined, or rolled threads pitches of the thread ranging from 0,2 mm to 6 mm and thread diameters (coarse thread) ranging from 1 mm to 68 mm; it does not apply to those threaded fasteners where special requirements are laid down in the product standards.

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ISO
ISO 1502:1996(Main)
ISO general-purpose metric screw threads — Gauges and gauging
SIST ISO 1502:1998

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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SIST
SIST ISO 724:1995(Main)
ISO general-purpose metric screw threads -- Basic dimensions
ISO 724:1993

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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SIST
oSIST prEN ISO 8675:2022(Main)
Fasteners - Hexagon thin nuts (style 0), with fine pitch thread (ISO/DIS 8675:2022)
prEN ISO 8675
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SIST
oSIST prEN ISO 8673:2022(Main)
Fasteners - Hexagon regular nuts (style 1), with fine pitch thread (ISO/DIS 8673:2022)
prEN ISO 8673
  • Draft
    13 pages
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SIST
oSIST prEN ISO 8674:2022(Main)
Fasteners - Hexagon high nuts (style 2), with fine pitch thread (ISO/DIS 8674:2022)
prEN ISO 8674
  • Draft
    10 pages
    English language
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SIST
oSIST prEN ISO 8675:2016(Main)
Hexagon thin nuts (style 0) chamfered, with fine pitch thread - Product grades A and B (ISO/DIS 8675:2016)
prEN ISO 8675

2017-11-17: Project cancelled in ISO/CS (see dataservice on 2017-11-16).

  • Draft
    9 pages
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SIST
oSIST prEN ISO 10512:2016(Main)
Prevailing torque hexagon regular nuts (with non-metallic insert), with fine pitch thread - Product grades A and B (ISO/DIS 10512:2016)
prEN ISO 10512

2017-11-17: Project cancelled in ISO/CS (see dataservice on 2017-11-16).

  • Draft
    8 pages
    English language
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SIST
oSIST prEN ISO 8674:2016(Main)
Hexagon high nuts (style 2), with fine pitch thread - Product grades A and B (ISO/DIS 8674:2016)
prEN ISO 8674

2017-11-17: Project cancelled in ISO/CS (see dataservice on 2017-11-16).

  • Draft
    8 pages
    English language
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SIST
oSIST prEN ISO 8673:2016(Main)
Hexagon regular nuts (style 1), with fine pitch thread - Product grades A and B (ISO/DIS 8673:2016)
prEN ISO 8673

2017-11-17: Project cancelled in ISO/CS (see dataservice on 2017-11-16).

  • Draft
    9 pages
    English language
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SIST
oSIST prEN ISO 10513:2016(Main)
Prevailing torque (all-metal) hexagon high nuts, with fine pitch thread - Product grades A and B (ISO/DIS 10513:2016)
prEN ISO 10513

2017-11-17: Project cancelled in ISO/CS (see dataservice on 2017-11-16).

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    8 pages
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SIST
SIST EN ISO 8765:2012(Main)
Hexagon head bolts with metric fine pitch thread - Product grades A and B (ISO 8765:2011)
EN ISO 8765:2011

This International Standard specifies the characteristics of hexagon head bolts with metric fine pitch thread with nominal thread diameters, d, from 8 mm to 64 mm, of product grade A for nominal thread diameters, d, from 8 mm to 24 mm and nominal lengths, l, up to and including 10d or 150 mm, whichever is the shorter, and
of product grade B for nominal thread diameters, d, over 24 mm or nominal lengths, l, over 10d or 150 mm, whichever is the shorter. If, in special cases, specifications other than those listed in this International Standard are required, they can be selected from existing International Standards, for example ISO 724, ISO 888, ISO 898-1, ISO 965-1, ISO 3506-1, ISO 4753 and ISO 4759-1. It is intended that coarse thread bolts according to ISO 4014 be the first choice.

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SIST
SIST EN ISO 8676:2012(Main)
Hexagon head screws with metric fine pitch thread - Product grades A and B (ISO 8676:2011)
EN ISO 8676:2011

ISO 8676:2010 specifies the characteristics of hexagon head screws with metric fine pitch thread with nominal thread diameters, d, from 8 mm to 64 mm of product grade A for nominal thread diameters, d, from 8 mm to 24 mm and nominal lengths, l, up to and including 10d or 150 mm, whichever is the shorter, and of product grade B for nominal thread diameters, d, over 24 mm or nominal lengths, l, over 10d or 150 mm, whichever is the shorter.

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