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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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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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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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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This document establishes rules for the simplified representation of threaded parts, with the exception of screw thread inserts, which are covered in ISO 6410-2. This representation is applicable when it is not necessary to show the exact shape and details of the parts (see ISO 6410-1), for example in assembly drawings.

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This document specifies definitions, dimensions and tolerances of parallel screw threads of M30 x 2,
M25 x 2 and M18 x 1,5, for the connection of valves to medical and industrial gas cylinders.
This document does not contain the connection requirements for:
— mechanical strength;
— gas tightness;
— capability of repeated assembly and dismounting operations (this aspect is covered in ISO 13341).

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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 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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This document establishes rules for the simplified representation of threaded parts, with the exception of screw thread inserts, which are covered in ISO 6410-2. This representation is applicable when it is not necessary to show the exact shape and details of the parts (see ISO 6410-1), for example in assembly drawings.

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This document establishes rules for the simplified representation of threaded parts, with the exception of screw thread inserts, which are covered in ISO 6410-2. This representation is applicable when it is not necessary to show the exact shape and details of the parts (see ISO 6410-1), for example in assembly drawings.

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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 11363-1:2018 specifies dimensions and tolerances for taper screw threads of nominal diameter 17,4 mm (designated as 17E) and 25,8 mm (designated as 25E) used for the connection of valves to gas cylinders.
ISO 11363-1:2018 does not cover the connection requirements for
-      mechanical strength,
-      gas tightness, and
-      capability of repeated assembly and dismounting operations.
Gauge inspection is covered by ISO 11363‑2.

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ISO 11363-2:2017 specifies types, dimensions and principles of use of gauges, to be used in conjunction with the taper threads specified in ISO 11363-1 (i.e. 17E and 25E threads).
It provides examples of calculations for thread gauge dimensions on the large end diameter (Annex A) and draws attention to the limitations of the gauging system specified (Annex B).

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This document specifies dimensions and tolerances for taper screw threads of nominal diameter
17,4 mm (designated as 17E) and 25,8 mm (designated as 25E) used for the connection of valves to gas
cylinders.
It does not cover the connection requirements for
— mechanical strength,
— gas tightness, and
— capability of repeated assembly and dismounting operations.
Gauge inspection is covered by ISO 11363-2.

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This document specifies types, dimensions and principles of use of gauges, to be used in conjunction
with the taper threads specified in ISO 11363-1 (i.e. 17E and 25E threads).
It provides examples of calculations for thread gauge dimensions on the large end diameter (Annex A)
and draws attention to the limitations of the gauging system specified (Annex B).

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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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This International Standard is a supplement to ISO 2568 and ISO 4230 and specifies the dimensions of
hand- and machine-operated circular screwing dies intended for production of parallel pipe threads,
G series, in accordance with ISO 228-1.
The general dimensions of these dies (diameter, thickness and fixing dimensions) are in accordance
with ISO 2568 so as to permit the driving of hand-operated dies with the aid of the die stocks defined in
that document.

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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 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 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 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 27627:2014 specifies the technical delivery condition, manufacturing process, material requirements, configuration and dimensions, and verification and inspection procedures for aluminium alloy drill pipes manufactured in accordance with ISO 15546.
ISO 27627:2014 also specifies the gauging procedure for taper buttress thread (right and left) and adjoining tapered stabilizing shoulders (bores) made of aluminium alloy drill pipes and related steel tool joints.

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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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This part of ISO 898 specifies mechanical and physical properties of bolts, screws and studs made of carbon steel and alloy steel when tested at an ambient temperature range of 10 °C to 35 °C. Fasteners (the term used when bolts, screws and studs are considered all together) that conform to the requirements of this part of ISO 898 are evaluated at that ambient temperature range. They might not retain the specified mechanical and physical properties at elevated temperatures (see Annex B) and/or lower temperatures. NOTE 1 Fasteners conforming to the requirements of this part of ISO 898 are used in applications ranging from 50 °C to +150 °C. Users are advised to consult an experienced fastener metallurgist for temperatures outside the range of 50 °C to +150 °C and up to a maximum temperature of +300 °C when determining appropriate choices for a given application. NOTE 2 Information for the selection and application of steels for use at lower and elevated temperatures is given, for example, in EN 10269, ASTM F2281 and in ASTM A320/A320M. Certain bolts and screws might not fulfil the tensile or torsional requirements of this part of ISO 898 because the geometry of their heads reduces the shear area in the head compared to the stress area in the thread. These include bolts and screws having a low or countersunk head (see 8.2). This part of ISO 898 is applicable to bolts, screws and studs
- made of carbon steel or alloy steel,
- having triangular ISO metric screw thread in accordance with ISO 68-1,
- with coarse pitch thread M1,6 to M39, and fine pitch thread M8×1 to M39×3,
- with diameter/pitch combinations in accordance with ISO 261 and ISO 262, and
- having thread tolerances in accordance with ISO 965-1, ISO 965-2 and ISO 965-4. It is not applicable to set screws and similar threaded fasteners not under tensile stress (see ISO 898-5). It does not specify requirements for such properties as
- weldability,
- corrosion resistance,
- resistance to shear stress,
- torque/clamp force performance (for test method, see ISO 16047), or
- fatigue resistance.

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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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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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This part of ISO 898 specifies mechanical and physical properties of bolts, screws and studs made of carbon steel and alloy steel when tested at an ambient temperature range of 10 °C to 35 °C. Fasteners (the term used when bolts, screws and studs are considered all together) that conform to the requirements of this part of ISO 898 are evaluated at that ambient temperature range. They might not retain the specified mechanical and physical properties at elevated temperatures (see Annex B) and/or lower temperatures. NOTE 1 Fasteners conforming to the requirements of this part of ISO 898 are used in applications ranging from 50 °C to +150 °C. Users are advised to consult an experienced fastener metallurgist for temperatures outside the range of 50 °C to +150 °C and up to a maximum temperature of +300 °C when determining appropriate choices for a given application. NOTE 2 Information for the selection and application of steels for use at lower and elevated temperatures is given, for example, in EN 10269, ASTM F2281 and in ASTM A320/A320M. Certain bolts and screws might not fulfil the tensile or torsional requirements of this part of ISO 898 because the geometry of their heads reduces the shear area in the head compared to the stress area in the thread. These include bolts and screws having a low or countersunk head (see 8.2). This part of ISO 898 is applicable to bolts, screws and studs
- made of carbon steel or alloy steel,
- having triangular ISO metric screw thread in accordance with ISO 68-1,
- with coarse pitch thread M1,6 to M39, and fine pitch thread M8×1 to M39×3,
- with diameter/pitch combinations in accordance with ISO 261 and ISO 262, and
- having thread tolerances in accordance with ISO 965-1, ISO 965-2 and ISO 965-4. It is not applicable to set screws and similar threaded fasteners not under tensile stress (see ISO 898-5). It does not specify requirements for such properties as
- weldability,
- corrosion resistance,
- resistance to shear stress,
- torque/clamp force performance (for test method, see ISO 16047), or
- fatigue resistance.

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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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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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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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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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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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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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ISO 5408:2009 specifies the fundamental terms and definitions for screw threads. These terms are applicable to symmetrical threads and unsymmetrical threads, or cylindrical threads and taper threads.

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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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TC - Modification to Figure 2

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This document specifies the requirements for thread form, dimensions, tolerances and designation for jointing pipe threads, sizes 1/16 to 6 inclusive, for joints made pressure-tight by the mating of the threads. These threads are taper external and taper internal and are intended for use with pipes suitable for threading and for valves, fittings or other pipeline equipment interconnected by threaded joints.
An appropriate thread sealant or jointing compound should be used on the thread to ensure pressure-tight joints.
NOTE 1     Threaded joints using taper external threads and parallel internal threads are detailed in EN 10226-1.
NOTE 2    The requirements for taper external threads are identical in EN 10226-1 and EN 10226-2.
NOTE 3    For pipe threads where pressure-tight joints are not made on the threads see EN ISO 228-1.
NOTE 4    EN 10226-3 gives details of recommended gauging systems for the verification of thread dimensions and thread form.

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This part of EN 10226 specifies a process using limit gauges, for the validation of taper internal and external threads and parallel internal threads on piping systems components and other products, the dimensions and tolerances of which are detailed in EN 10226-1 and prEN 10226-2.
The gauging system described may not be suitable, without special precautions, for gauging of threads on injection moulded plastic workpieces.
This part of EN 10226 does not cover completely all the requirements necessary for full control of thread quality and dimensions. Additional control of tools and equipment and visual inspection during production are required to ensure complete compliance with EN 10226-1 and prEN 10226-2, for example the length of useful thread on internally threaded workpieces should be checked by direct measurement.
Annex A gives a summary of the gauges included in this part of EN 10226, together with details of the thread elements controlled by each gauge and gauge identification numbers.
In the event of a dispute over compliance with the requirements of EN 10226-1 and prEN 10226-2, the gauges in this part of EN 10226 are to be considered as decisive for the thread elements which they control on the workpiece.

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This document specifies the requirements for thread form, dimensions, tolerances and designation for jointing pipe threads, sizes 1/16 to 6 inclusive, for joints made pressure-tight by the mating of the threads. These threads are taper external and taper internal and are intended for use with pipes suitable for threading and for valves, fittings or other pipeline equipment interconnected by threaded joints.
An appropriate thread sealant or jointing compound should be used on the thread to ensure pressure-tight joints.
NOTE 1     Threaded joints using taper external threads and parallel internal threads are detailed in EN 10226-1.
NOTE 2    The requirements for taper external threads are identical in EN 10226-1 and EN 10226-2.
NOTE 3    For pipe threads where pressure-tight joints are not made on the threads see EN ISO 228-1.
NOTE 4    EN 10226-3 gives details of recommended gauging systems for the verification of thread dimensions and thread form.

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This part of EN 10226 specifies a process using limit gauges, for the validation of taper internal and external threads and parallel internal threads on piping systems components and other products, the dimensions and tolerances of which are detailed in EN 10226-1 and prEN 10226-2.
The gauging system described may not be suitable, without special precautions, for gauging of threads on injection moulded plastic workpieces.
This part of EN 10226 does not cover completely all the requirements necessary for full control of thread quality and dimensions. Additional control of tools and equipment and visual inspection during production are required to ensure complete compliance with EN 10226-1 and prEN 10226-2, for example the length of useful thread on internally threaded workpieces should be checked by direct measurement.
Annex A gives a summary of the gauges included in this part of EN 10226, together with details of the thread elements controlled by each gauge and gauge identification numbers.
In the event of a dispute over compliance with the requirements of EN 10226-1 and prEN 10226-2, the gauges in this part of EN 10226 are to be considered as decisive for the thread elements which they control on the workpiece.

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This part of EN 10226 specifies the requirements for thread form, dimensions, tolerances and designation for jointing pipe threads, sizes 1/16 to 6 inclusive, for joints made pressure tight by the mating of the threads. These threads are taper external (designated by R) and parallel internal (designated by Rp) and are intended for use with pipes suitable for threading and for valves, fittings or other pipeline equipments interconnected by threaded joints.

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This part of EN 10226 specifies the requirements for thread form, dimensions, tolerances and designation for jointing pipe threads, sizes 1/16 to 6 inclusive, for joints made pressure tight by the mating of the threads. These threads are taper external (designated by R) and parallel internal (designated by Rp) and are intended for use with pipes suitable for threading and for valves, fittings or other pipeline equipments interconnected by threaded joints.

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