This European Standard is applicable to the selection of bolting for equipment subject to the Pressure Equipment Directive 2014/68/EU.
It specifies standards and additional requirements for dimensions, materials and technical conditions of delivery for bolting.
The bolting selection covered by this European Standard is regarded to be used for combination with flanges according to the series EN 1092 (PN designated flanges) and the series EN 1759 (Class designated flanges).
The selection is based on commonly used materials, bolts and nuts. It covers temperature ranges of the general service of standard flanges (based on PN or Class).
NOTE 1   The bolting selection given may be used in combination with non-standard flanges too provided that the range of application of the equipment for which the bolting is intended to be used is covered. It is the purchaser's option to decide on this.
When selecting bolting according to this European Standard it is essential to take into account other parameters such as type of fluids, corrosion hazards and relaxation at elevated temperatures.
The purpose of this European Standard is to provide a selection of most commonly used bolting types and bolting material combinations as well a tool for easy selection of suitable bolting for equipment.
It is not the intention to specify all possible applications but to give guidance on the most commonly applications. According to this, e.g. application limits for material in the creep range are not explicitly covered in this European Standard but some bolting materials listed (see Table 3, footnote h) are suitable to be used in this temperature range. Wherever the starting material standard provides mechanical properties for this temperature range respective reference is made in Table 3.
NOTE 2   Special services and ambient conditions may require the application of coatings. It is the purchaser's option to decide on this. Depending on the coating used, a verification of the temperature ranges

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This document specifies the mechanical and physical properties of bolts, screws and studs, with
coarse pitch thread and fine pitch thread, made of corrosion-resistant stainless steels, when tested at
the ambient temperature range of 10 °C to 35 °C. It specifies property classes in relation to austenitic,
martensitic, ferritic and duplex (austenitic-ferritic) steel grades for fasteners.
The term “fasteners” is used in this document when bolts, screws and studs are considered all together.
ISO 3506-6 provides general rules and additional technical information on suitable stainless steels and
their properties.
Fasteners conforming to the requirements of this document are evaluated at the ambient temperature
specified in paragraph 1. It is possible that they do not retain the specified mechanical and physical
properties at elevated and/or lower temperatures.
NOTE 1 Fasteners conforming to the requirements of this document are used without restriction in
applications ranging from –20 °C to +150 °C; however, fasteners conforming to this document are also used for
applications outside this range down to –196 °C and up to +300 °C. For more details, see Annex A and ISO 3506-6.
Outside the temperature range of –20 °C to +150 °C, it is the responsibility of the user to determine the
appropriate choice for a given application in consultation with an experienced fastener metallurgist
and by taking into account e.g. stainless steel composition, duration of exposure at elevated or low
temperature, the effect of the temperature on the fasteners mechanical properties and clamped parts,
and the corrosive service environment of the bolted joint.
NOTE 2 ISO 3506-5 is developed in order to assist in the selection of appropriate stainless steel grades and
property classes intended for use at temperatures up to +800 °C.
This document applies to bolts, screws and studs:
— with ISO metric thread in accordance with ISO 68-1,
— with diameter/pitch combinations in accordance with ISO 261 and ISO 262,
— with coarse pitch thread M1,6 to M39, and fine pitch thread M8×1 to M39×3,
— with thread tolerances in accordance with ISO 965-1 and ISO 965-2,
— with specified property classes, and
— of any shape.
Stainless steel grades and property classes can be used for sizes outside the diameter limits of this
document (i.e. for d < 1,6 mm or d > 39 mm), provided that all applicable chemical, mechanical and
physical requirements are met.
Certain bolts, screws and studs might not fulfil the tensile or torsional requirements of this document
because of the geometry of their head or unthreaded shank, thus resulting in reduced loadability (e.g.
when shear area in the head is less than the stress area in the thread; see 8.2.2).
This document does not apply to set screws and similar threaded fasteners not under tensile stress
(see ISO 3506-3).
It does not specify requirements for functional properties such as:
— torque/clamp force properties,
— shear strength,
— fatigue resistance, or
— weldability.

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This document specifies the mechanical and physical properties of bolts, screws and studs, with coarse pitch thread and fine pitch thread, made of corrosion-resistant stainless steels, when tested at the ambient temperature range of 10 °C to 35 °C. It specifies property classes in relation to austenitic, martensitic, ferritic and duplex (austenitic-ferritic) steel grades for fasteners.
The term "fasteners" is used in this document when bolts, screws and studs are considered all together.
ISO 3506‑6 provides general rules and additional technical information on suitable stainless steels and their properties.
Fasteners conforming to the requirements of this document are evaluated at the ambient temperature specified in paragraph 1. It is possible that they do not retain the specified mechanical and physical properties at elevated and/or lower temperatures.
NOTE 1 Fasteners conforming to the requirements of this document are used without restriction in applications ranging from ?20 °C to +150 °C; however, fasteners conforming to this document are also used for applications outside this range down to ?196 °C and up to +300 °C. For more details, see Annex A and ISO 3506‑6.
Outside the temperature range of ?20 °C to +150 °C, it is the responsibility of the user to determine the appropriate choice for a given application in consultation with an experienced fastener metallurgist and by taking into account e.g. stainless steel composition, duration of exposure at elevated or low temperature, the effect of the temperature on the fasteners mechanical properties and clamped parts, and the corrosive service environment of the bolted joint.
NOTE 2 ISO 3506‑5 is developed in order to assist in the selection of appropriate stainless steel grades and property classes intended for use at temperatures up to +800 °C.
This document applies to bolts, screws and studs:
— with ISO metric thread in accordance with ISO 68‑1,
— with diameter/pitch combinations in accordance with ISO 261 and ISO 262,
— with coarse pitch thread M1,6 to M39, and fine pitch thread M8×1 to M39×3,
— with thread tolerances in accordance with ISO 965‑1 and ISO 965‑2,
— with specified property classes, and
— of any shape.
Stainless steel grades and property classes can be used for sizes outside the diameter limits of this document (i.e. for d < 1,6 mm or d > 39 mm), provided that all applicable chemical, mechanical and physical requirements are met.
Certain bolts, screws and studs might not fulfil the tensile or torsional requirements of this document because of the geometry of their head or unthreaded shank, thus resulting in reduced loadability (e.g. when shear area in the head is less than the stress area in the thread; see 8.2.2).
This document does not apply to set screws and similar threaded fasteners not under tensile stress (see ISO 3506‑3).
It does not specify requirements for functional properties such as:
— torque/clamp force properties,
— shear strength,
— fatigue resistance, or
— weldability.

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This document specifies the mechanical and physical properties of bolts, screws and studs, with coarse pitch thread and fine pitch thread, made of corrosion-resistant stainless steels, when tested at the ambient temperature range of 10 °C to 35 °C. It specifies property classes in relation to austenitic, martensitic, ferritic and duplex (austenitic-ferritic) steel grades for fasteners. The term "fasteners" is used in this document when bolts, screws and studs are considered all together. ISO 3506‑6 provides general rules and additional technical information on suitable stainless steels and their properties. Fasteners conforming to the requirements of this document are evaluated at the ambient temperature specified in paragraph 1. It is possible that they do not retain the specified mechanical and physical properties at elevated and/or lower temperatures. NOTE 1 Fasteners conforming to the requirements of this document are used without restriction in applications ranging from ?20 °C to +150 °C; however, fasteners conforming to this document are also used for applications outside this range down to ?196 °C and up to +300 °C. For more details, see Annex A and ISO 3506‑6. Outside the temperature range of ?20 °C to +150 °C, it is the responsibility of the user to determine the appropriate choice for a given application in consultation with an experienced fastener metallurgist and by taking into account e.g. stainless steel composition, duration of exposure at elevated or low temperature, the effect of the temperature on the fasteners mechanical properties and clamped parts, and the corrosive service environment of the bolted joint. NOTE 2 ISO 3506‑5 is developed in order to assist in the selection of appropriate stainless steel grades and property classes intended for use at temperatures up to +800 °C. This document applies to bolts, screws and studs: — with ISO metric thread in accordance with ISO 68‑1, — with diameter/pitch combinations in accordance with ISO 261 and ISO 262, — with coarse pitch thread M1,6 to M39, and fine pitch thread M8×1 to M39×3, — with thread tolerances in accordance with ISO 965‑1 and ISO 965‑2, — with specified property classes, and — of any shape. Stainless steel grades and property classes can be used for sizes outside the diameter limits of this document (i.e. for d d > 39 mm), provided that all applicable chemical, mechanical and physical requirements are met. Certain bolts, screws and studs might not fulfil the tensile or torsional requirements of this document because of the geometry of their head or unthreaded shank, thus resulting in reduced loadability (e.g. when shear area in the head is less than the stress area in the thread; see 8.2.2). This document does not apply to set screws and similar threaded fasteners not under tensile stress (see ISO 3506‑3). It does not specify requirements for functional properties such as: — torque/clamp force properties, — shear strength, — fatigue resistance, or — weldability.

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This Standard specifies the characteristics of hexagon socket countersunk head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M2 to M20, and with product grade A.

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This document specifies the characteristics of hexagon socket countersunk head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M2 to M20, and with product grade A.
NOTE 1 Other dimensional options are given in ISO 888, ISO 965-1 and ISO 4753.
NOTE 2 The reduced loadability (related to the countersunk head dimensions in combination with penetration of the hexagon socket specified in this document) implies a limitation of ultimate tensile load; see Table 5.
NOTE 3 Particular attention is needed to ensure alignment of the countersunk head with the bearing surface of the countersink in the assembly.

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This document specifies the technical, qualification and quality assurance requirements for bolts in material FE-PA2601 (A286) of tensile strength class 1 100 MPa at room temperature, maximum test temperature of material 650 °C.
Primarily for aerospace applications it is applicable to such bolts when referenced on the product standard or definition document.

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This document specifies the characteristics of hexagon socket countersunk head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M2 to M20, and with product grade A. NOTE 1 Other dimensional options are given in ISO 888, ISO 965-1 and ISO 4753. NOTE 2 The reduced loadability (related to the countersunk head dimensions in combination with penetration of the hexagon socket specified in this document) implies a limitation of ultimate tensile load; see Table 5. NOTE 3 Particular attention is needed to ensure alignment of the countersunk head with the bearing surface of the countersink in the assembly.

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This document specifies the characteristics of hexagon washer head drilling screws with tapping screw
threads, made of steel, with thread sizes ST2,9 to ST6,3, and with product grade A.

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This document specifies the characteristics of hexagon washer head tapping screws, made of steel and stainless steel, with thread sizes ST2,2 to ST8, and with product grade A.

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This document specifies the characteristics of hexagon washer head drilling screws with tapping screw threads, made of steel, with thread sizes ST2,9 to ST6,3, and with product grade A.

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This document specifies the characteristics of hexagon washer head tapping screws, made of steel and stainless steel, with thread sizes ST2,2 to ST8, and with product grade A.

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This document specifies the characteristics of hexagon washer head drilling screws with tapping screw threads, made of steel, with thread sizes ST2,9 to ST6,3, and with product grade A.

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This document specifies the characteristics of hexagon washer head tapping screws, made of steel and stainless steel, with thread sizes ST2,2 to ST8, and with product grade A.

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This European standard specifies the characteristics, qualification and acceptance requirements for
bolts with MJ threads in TI-P64001, for aerospace applications.
Strength class: 1 100 MPa1.
It is applicable whenever referenced.

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This standard specifies the characteristics, qualification and acceptance requirements for bolts with MJ
threads in NI-PH2601.
Classification: 1 275 MPa1/650 °C2.
It is applicable whenever referenced.

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This document specifies requirements for electroplated coatings and coating systems on steel fasteners. The requirements related to dimensional properties also apply to fasteners made of copper or copper alloys.
It also specifies requirements and gives recommendations to minimize the risk of hydrogen embrittlement; see 4.4 and Annex B.
It mainly applies to zinc and zinc alloy coating systems (zinc, zinc-nickel, zinc-iron) and cadmium, primarily intended for corrosion protection and other functional properties:
— with or without conversion coating;
— with or without sealant;
— with or without top coat;
— with or without lubricant (integral lubricant and/or subsequently added lubricant).
Specifications for other electroplated coatings and coating systems (tin, tin-zinc, copper-tin, copper-silver, copper, silver, copper-zinc, nickel, nickel-chromium, copper-nickel, copper-nickel-chromium) are included in this document only for dimensional requirements related to fasteners with ISO metric threads.
This document applies to bolts, screws, studs and nuts with ISO metric thread, to fasteners with non-ISO metric thread, and to non-threaded fasteners such as washers, pins, clips and rivets.
Information for design and assembly of coated fasteners is given in Annex A.
This document does not specify requirements for properties such as weldability or paintability.
NOTE Other International Standards specify differing electroplating processes. For electroplating of fasteners, the requirements of this document apply, unless otherwise agreed.

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ISO 13918:2017 specifies the following:
- requirements for studs and ceramic ferrules for arc stud welding;
- dimensions, materials and mechanical properties.

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ISO 888:2012 specifies lengths and thread lengths for bolts, screws and studs for use in appropriate product standards and other relevant documents, e.g. for parts per drawing.
It applies to bolts, screws and studs with ISO metric screw thread according to ISO 68-1.

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This draft European Standard specifies, together with EN 14399-1 and EN 14399-2, the requirements for assemblies of high-strength structural countersunk bolts and nuts of system HR suitable for preloaded joints with thread sizes M12 to M36 and property classes 8.8/8 or 8.8/10 and 10.9/10.
Bolting assemblies in accordance with this document have been designed to allow preloading of at least 0,7 fub × As according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt. For this purpose the components have the following characteristics:
-   regular nut height according to (style 1) see EN ISO 4032;
-   thread length of the bolt according to ISO 888.
Bolting assemblies in accordance with this document include washers according to EN 14399-6 or to EN 14399-5.
NOTE   Attention is drawn to the importance of ensuring that bolting assemblies are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made.
General requirements and requirements for suitability for preloading are specified in EN 14399-2.
Clamp lengths and grip lengths for the bolting assemblies are specified in the normative Annex A.

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This draft European Standard specifies together with EN 14399-1 and EN 14399-2, the requirements for assemblies of high-strength structural bolts and nuts of system HV suitable for preloaded joints with large widths across flats, thread sizes M12 to M36 and property classes 10.9/10.
Bolting assemblies (including fit bolts with nominal shank diameter d + 1 mm) in accordance with this document have been designed to allow preloading of at least 0,7 fub × As ) according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by plastic deformation of the engaged threads. For this purpose the components have the following characteristics:
-   nut height approximately 0,8 d;
-   bolt with short thread length.
Bolting assemblies in accordance with this document include washers according to EN 14399-6.
NOTE   Attention is drawn to the importance of ensuring that the bolting assemblies are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made.
General requirements and requirements for suitability for preloading are specified in EN 14399-2.
Clamp lengths and grip lengths for the bolting assemblies are specified in the normative Annex A.

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ISO 888:2012 specifies lengths and thread lengths for bolts, screws and studs for use in appropriate product standards and other relevant documents, e.g. for parts per drawing.
It applies to bolts, screws and studs with ISO metric screw thread according to ISO 68-1.

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This draft European Standard specifies, together with EN 14399-1 and EN 14399-2, the requirements for compressible washer-type direct tension indicators, nut face washers and bolt face washers as part of high-strength structural bolting assemblies suitable for preloaded joints.
These direct tension indicators are specified as part of high-strength structural bolting assemblies of system HR or HV in accordance with EN 14399-3, EN 14399-4, EN 14399-7 or EN 14399-8, with nominal thread sizes M12 up to and including M36 and property classes 8.8/8 or 8.8/10 and 10.9/10.
It specifies two property designations H8 and H10 for direct tension indicators, together with general dimensions, tolerances, materials and performance.
Bolting assemblies in accordance with this document have been designed to allow preloading of at least 0,7 fub × As ) according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt for system HR in accordance with EN 14399-3 or EN 14399-7, or by plastic deformation of the engaged threads for system HV in accordance with EN 14399-4 or EN 14399-8.
Bolting assemblies conforming to this document may include washer(s) according to EN 14399-6 or to EN 14399-5 (under the nut only).
NOTE 1   Attention is drawn to the importance of ensuring that the bolting assemblies are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made.
General requirements and requirements for suitability for preloading are specified in EN 14399-2 together with Clause 5 of this document.
NOTE 2   Compressible washer-type direct tension indicators are also known as load indicating washers.

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This draft European Standard specifies, together with EN 14399-1 and EN 14399-2, the requirements for assemblies of high-strength structural bolts and nuts of system HRC suitable for preloaded joints, with hexagon head (large widths across flats), cup head or countersunk head, thread sizes M12 to M36 and property class 10.9/10.
Bolting assemblies in accordance with this document have been designed to allow preloading of at least 0,7 fub × As according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt. For this purpose the components have the following characteristics:
-   regular nut height according to (style 1), see EN ISO 4032, or
-   nut with height m = 1 D,
-   thread length of the bolt in accordance with ISO 888.
Bolting assemblies in accordance with this document include washers according to EN 14399-6 or to EN 14399-5 (under the nut only).
NOTE   Attention is drawn to the importance of ensuring that the bolting assemblies are correctly used if a satisfactory result is to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made.
General requirements and requirements for suitability for preloading are specified in EN 14399-2 and in Clause 8 of this document.

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This document covers arc stud welding of metallic materials subject to static and fatigue loading. It
specifies requirements that are particular to stud welding, in relation to welding knowledge, quality
requirements, welding procedure specification, welding procedure qualification, qualification testing
of operators and testing of production welds.
This document is appropriate where it is necessary to demonstrate the capability of a manufacturer to
produce welded construction of a specified quality.
NOTE General quality requirements for fusion welding of metallic materials are given in ISO 3834-1,
ISO 3834-2, ISO 3834-3, ISO 3834-4 and ISO 3834-5.
This document has been prepared in a comprehensive manner, with a view to it being used as a
reference in contracts. The requirements contained within it can be adopted in full, or partially, if
certain requirements are not relevant to a particular construction (see Annex B). For processing of stud
welding, see Annex A.

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ISO 13918:2017 specifies the following:
- requirements for studs and ceramic ferrules for arc stud welding;
- dimensions, materials and mechanical properties.

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ISO 13918:2017 specifies the following: - requirements for studs and ceramic ferrules for arc stud welding; - dimensions, materials and mechanical properties.

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This part of this European Standard specifies the general requirements for bolting assemblies for non-preloaded structural bolting. Bolting assemblies in accordance with this European Standard are designed to be used in structural bolting connections for shear and/or tensile loading.
The intended use of bolting assemblies in accordance with this European standard is structural metallic works.
It applies to bolts (the term used when bolts partially threaded, screws, studs and stud-bolts are considered all together) and nuts made of carbon steel, alloy steel, stainless steel or aluminium or aluminium alloy with the following property classes:
-   bolts made of carbon steel and alloy steel: 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 10.9 (in accordance with EN ISO 898 1);
-   nuts made of carbon steel and alloy steel: 5, 6, 8, 10, 12 (in accordance with EN ISO 898 2);
-   bolts made of austenitic stainless steel: 50, 70, 80 (in accordance with EN ISO 3506 1);
-   nuts made of austenitic stainless steel: 50, 70, 80 (in accordance with EN ISO 3506 2);
-   bolts made of aluminium or aluminium alloy: AL1 to AL6 (in accordance with EN 28839);
-   nuts made of aluminium or aluminium alloy: AL1 to AL6 (in accordance with EN 28839).
This European Standard applies to bolting assemblies with ISO metric coarse pitch thread from sizes M12 to M39 for use in steel structures according to EN 1090 2, and from M5 to M39 for use in aluminium or aluminium alloy structures according to EN 1090 3. The use of thread sizes larger than M39 is not precluded provided all applicable requirements of this standard are met.
WARNING — Only bolting assemblies are covered by this harmonized standard: separate bolts or nuts, not tested as part of an assembly lot of bolting assemblies in accordance with EN 15048 2, are not covered by this harmonized standard and cannot be CE marked.
NOTE 1   The property classes 4.8, 5.8 and 6.8 may be subjected to limitations of use.
NOTE 2   High-strength structural bolting assemblies for preloading which meet the requirements of EN 14399–1 are not within the scope of this European Standard but they are also suitable for use in non-preloaded structural bolting.
NOTE 3   Bolts and nuts made of aluminium or aluminium alloys are not designed to be used in steel structures, see EN 1090–2.
Bolting assemblies in accordance with this European Standard are not designed to be welded.
Railway rail fasteners are not covered by this European Standard.

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This European Standard specifies the technical requirements for structural bolting assemblies in order to ensure the suitability for non-preloaded bolted connections in steel structures or aluminium structures.
A suitability test is specified to check the behaviour of the structural bolting assemblies.
It applies to bolting assemblies specified in FprEN 15048 1.

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This document specifies together with EN 14399-1 the requirements for assemblies of high-strength structural bolts and nuts of system HV suitable for preloaded joints with large widths across flats, thread sizes M12 to M36 and property classes 10.9/10.
Bolt and nut assemblies to this document have been designed to allow preloading of at least 0,7 fub x As 1) according to EN 1993-1-1 (Eurocode 3) and to obtain ductility predominantly by plastic deformation of the engaged threads. For this purpose the components have the following characteristics:
-  nut height approximately 0,8 d
-  bolt with short thread length
Bolt and nut assemblies according to this document include washers according to EN 14399-6.
NOTE   Attention is drawn to the importance of ensuring that the bolts are correctly used if satisfactory result are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made.
The requirements for suitability for preloading are specified in EN 14399-2.
Clamp lengths and grip lengths for the bolt/nut/washer assemblies are given in the normative Annex A.
----------------------------
1) fub is the nominal tensile strength (Rm) and As the stress area of the bolt.

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This document specifies, together with EN 14399 1, the requirements for assemblies of high-strength structural bolts and nuts of system HR suitable for preloaded joints with large widths across flats, thread sizes M12 to M36 and property classes 8.8/8 and 10.9/10.
Bolt and nut assemblies to this document have been designed to allow preloading of at least 0,7 fub x As 1) according to EN 1993-1-1 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt. For this purpose the components have the following characteristics:
-  nut height according to style 1 (see EN ISO 4032);
-  thread length of the bolt according to ISO 888.
Bolt and nut assemblies to this document include washers according to EN 14399-6 or to EN 14399-5 (under the nut only).
NOTE   Attention is drawn to the importance of ensuring that the bolts are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made.
The requirements for suitability for preloading are specified in EN 14399-2.
Clamp lengths and grip lengths for the bolt/nut/washer assemblies are given in the normative Annex A.
--------------------------------------------------------------
1) fub is the nominal tensile strength (Rm) and As the stress area of the bolt.

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This International Standard specifies hexagon flange head tapping screws with threads from ST2,2 up to and
including ST9,5.

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This European Standard specifies, together with EN 14399 1 and EN 14399 2, the requirements for assemblies of high-strength structural bolts and nuts of system HR suitable for preloaded joints with large widths across flats, thread sizes M12 to M36 and property classes 8.8/8 or 8.8/10 and 10.9/10.
Bolting assemblies in accordance with this document have been designed to allow preloading of at least 0,7 fub × As  ) according to EN 1993 1 8 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt. For this purpose the components have the following characteristics:
-   normal nut height (style 1), see EN ISO 4032;
-   thread length of the bolt according to ISO 888.
Bolting assemblies in accordance with this document include washers according to EN 14399 6 or to EN 14399 5 (under the nut only).
NOTE   Attention is drawn to the importance of ensuring that bolting assemblies are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made.
General requirements and requirements for suitability for preloading are specified in EN 14399 2.
Clamp lengths and grip lengths for the bolting assemblies are specified in the normative Annex A.

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This International Standard specifies the characteristics of hexagon bolts with flanges, small series, of
product grade A (except the driving feature which is according to product grade B), with threads from
M5 up to and including M16, and property classes 8.8 to 10.9 and A2‑70.
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 261, ISO 888, ISO 898‑1,
ISO 965‑2 and ISO 3506‑1.

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This International Standard specifies lengths and thread lengths for bolts, screws and studs for use in
appropriate product standards and other relevant documents, e.g. for parts per drawing.
It applies to bolts, screws and studs with ISO metric screw thread according to ISO 68-1.
2

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This International Standard specifies the shape and basic dimensions of the hexalobular internal driving
feature for bolts and screws, including the gauging method.
The curvature of the contour of the hexalobular internal driving feature is defined by the gauges
specified in Tables 3, 4, and 5. Additional information which can be used when drawing the contour is
given in Annex A.
The intent of this International Standard is to provide the details necessary for inspection of the
hexalobular driving feature. It is not suitable for, nor intended to be used as, a manufacturing standard.

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ISO 10664:2014 specifies the shape and basic dimensions of the hexalobular internal driving feature for bolts and screws, including the gauging method. The curvature of the contour of the hexalobular internal driving feature is defined and additional information which can be used when drawing the contour given.
The intent is to provide the details necessary for inspection of the hexalobular driving feature. ISO 10664:2014 is not suitable for, nor intended to be used as, a manufacturing standard.

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ISO 10664:2014 specifies the shape and basic dimensions of the hexalobular internal driving feature for bolts and screws, including the gauging method. The curvature of the contour of the hexalobular internal driving feature is defined and additional information which can be used when drawing the contour given. The intent is to provide the details necessary for inspection of the hexalobular driving feature. ISO 10664:2014 is not suitable for, nor intended to be used as, a manufacturing standard.

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This International Standard specifies the characteristics of hexagon head screws with threads from M1,6 up to and including M64, of product grade A for threads M1,6 to M24 and nominal lengths up to and including 10d or 150 mm, whichever is the shorter, and product grade B for threads over M24 or nominal lengths 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.

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ISO 4017:2014 specifies the characteristics of hexagon head screws with threads from M1,6 up to and including M64, of product grade A for threads M1,6 to M24 and nominal lengths up to and including 10d or 150 mm, whichever is the shorter, and product grade B for threads over M24 or nominal lengths over 10d or 150 mm, whichever is the shorter.

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ISO 4017:2014 specifies the characteristics of hexagon head screws with threads from M1,6 up to and including M64, of product grade A for threads M1,6 to M24 and nominal lengths up to and including 10d or 150 mm, whichever is the shorter, and product grade B for threads over M24 or nominal lengths over 10d or 150 mm, whichever is the shorter.

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This International Standard specifies hexalobular socket countersunk head bolts and screws with high head (full loadability), of product grade A, and thread diameters from M3 up to and including M10 and property classes 4.8, 8.8 and 10.9. This International Standard also specifies gauge dimensions for the control of the head dimensions. 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 261, ISO 888, ISO 898-1, ISO 965-2 and ISO 4759-1.

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This International Standard specifies the characteristics of hexalobular socket countersunk flat head screws in product grade A and with threads from M2 to M10 inclusive and with reduced loadability in accordance with Table 3 of this standard. If, in special cases, specifications others than those listed in this International Standard are required, they are usually selected from existing International Standards, for example ISO 261, ISO 888, ISO 898-1, ISO 965-2, ISO 3506-1, 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 14582:2013 specifies hexalobular socket countersunk head bolts and screws with high head (full loadability), of product grade A, and thread diameters from M3 up to and including M10 and property classes 4.8, 8.8 and 10.9.

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ISO 14581:2013 specifies the characteristics of hexalobular socket countersunk flat head screws in product grade A and with threads from M2 to M10 inclusive and with reduced loadability (according to Table 3).

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ISO 14581:2013 specifies the characteristics of hexalobular socket countersunk flat head screws in product grade A and with threads from M2 to M10 inclusive and with reduced loadability (according to Table 3).

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ISO 14582:2013 specifies hexalobular socket countersunk head bolts and screws with high head (full loadability), of product grade A, and thread diameters from M3 up to and including M10 and property classes 4.8, 8.8 and 10.9.

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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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