SIST EN 1664:2001
(Main)Prevailing torque type all-metal hexagon nuts with flange (ISO 7044:1997, modified)
Prevailing torque type all-metal hexagon nuts with flange (ISO 7044:1997, modified)
This European Standard specifies the characteristics of prevailing torque type all-metal hexagon nuts with flange and threads from M5 to M20 inclusive, in product grade A for threads up to and including M16 and product grade B for threads above M16 and property classes 8, 10 and 12.
Sechskantmuttern mit Klemmteil und Flansch, Ganzmetallmuttern (ISO 7044:1997, modifiziert)
Diese Europäische Norm enthält Festlegungen für Sechskantmuttern mit Klemmteil und Flansch (Ganzmetallmuttern), mit Gewinde von M5 bis M20, in Produktklasse A für Gewinde bis M16 und Produktklasse B für Gewinde über M16 und Festigkeitsklassen 8, 10 und 12.
Ecrous hexagonaux a embase, autofreinés, tout métal (ISO 7044:1997, modifiée)
La présente Norme européenne définit les caractéristiques des écrous hexagonaux a embase, autofreinés, tout métal, de filetage M5 a M20 inclus de grade A pour filetages M16 et classes de qualité 8, 10 et 12.
Šestrobe zaščitne matice z deformacijo s poševnim krajcem (ISO 7044:1997, dopolnjeno)
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.GRSROQMHQRSechskantmuttern mit Klemmteil und Flansch, Ganzmetallmuttern (ISO 7044:1997, modifiziert)Ecrous hexagonaux a embase, autofreinés, tout métal (ISO 7044:1997, modifiée)Prevailing torque type all-metal hexagon nuts with f
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This document specifies the mechanical and physical properties of nuts made of non-alloy steel or alloy
steel, when tested at the ambient temperature range of 10 °C to 35 °C.
This document applies to nuts:
— with ISO metric thread (see ISO 68-1),
— with diameter/pitch combinations according to ISO 261 and ISO 262,
— with coarse pitch thread M5 to M39, and fine pitch thread M8×1 to M39×3,
— with thread tolerances according to ISO 965-1, ISO 965-2 or ISO 965-5,
— with specified property classes 04, 05, 5, 6, 8, 10 and 12 including proof load,
— of three different nut styles (see 5.1): regular nuts (style 1), high nuts (style 2) and thin nuts (style 0),
— with a minimum outside diameter or width across flats s ≥ 1,45D,
— able to mate with bolts, screws and studs with property classes in accordance with ISO 898-1 (see
Annex B), and
— intended to be used in applications ranging from –50 °C to +150 °C, or up to +300 °C.
WARNING — Nuts conforming to the requirements of this document are tested at the ambient
temperature range of 10 °C to 35 °C and are used in applications ranging from –50 °C to +150 °C;
however, these nuts are also used outside this range and up to +300 °C for specific applications.
It is possible that they do not retain the specified mechanical and physical properties at lower
and/or elevated temperatures. Therefore, it is the responsibility of the user to determine the
appropriate choices based on the service environment conditions of the assembly (see also 7.1).
For additional specifications applicable to hot dip galvanized nuts, see ISO 10684.
For nuts designed for particular applications, see ISO/TR 16224.
This document does not specify requirements for functional properties such as:
— prevailing torque properties (see ISO 2320),
— torque/clamp force properties (see ISO 16047 for test method),
— weldability, or
— corrosion resistance.
- Standard41 pagesEnglish languagesale 10% offe-Library read for×1 day
- Draft36 pagesEnglish languagesale 10% offe-Library read for×1 day
This document specifies the mechanical and physical properties of nuts, 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 nuts.
ISO 3506-6 provides general rules and additional technical information on suitable stainless steels and
their properties.
Nuts 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 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 fastener mechanical properties and clamped parts,
and the corrosive service environment of the bolted joint.
NOTE 2 ISO 3506-53) 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 nuts:
— 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 M5 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, including proof load,
— with different nut styles: thin nuts, regular nuts and high nuts,
— with a minimum nut height m ≥ 0,45D,
— with a minimum outside diameter or width across flats s ≥ 1,45D (see Annex A),
— of any shape, and
— able to mate with bolts, screws and studs with property classes in accordance with ISO 3506-1.
Stainless steel grades and property classes can be used for sizes outside the diameter limits of this
document (i.e. for D < 5 mm or D > 39 mm), provided that all applicable chemical, mechanical and
physical requirements are met.
This document does not specify requirements for functional properties such as:
— torque/clamp force properties,
— prevailing torque properties, or
— weldability.
- Standard37 pagesEnglish languagesale 10% offe-Library read for×1 day
- Standard37 pagesEnglish languagesale 10% offe-Library read for×1 day
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.
- Standard27 pagesEnglish languagesale 10% offe-Library read for×1 day
- 29-Feb-2016
- 04-Sep-2018
- 21.060.10
- 21.060.20
- 89/106/EEC
- ISEL
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.
- Standard20 pagesEnglish languagesale 10% offe-Library read for×1 day
- 29-Feb-2016
- 04-Sep-2018
- 21.060.10
- 21.060.20
- 89/106/EEC
- ISEL
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.
- Standard28 pagesEnglish languagesale 10% offe-Library read for×1 day
- 29-Feb-2016
- 14-May-2018
- 21.060.10
- 21.060.20
- 89/106/EEC
- ISEL
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.
- Standard29 pagesEnglish languagesale 10% offe-Library read for×1 day
This International Standard specifies the functional properties for prevailing torque steel nuts when
tested at an ambient temperature range of +10 °C to +35 °C. It includes a combined test method to
determine the prevailing torque properties and the torque/clamp force properties at the same time.
It applies to prevailing torque all metal type nuts and prevailing torque non-metallic insert type nuts:
— with triangular ISO thread in accordance with ISO 68-1;
— with diameter/pitch combination in accordance with ISO 261 and ISO 262;
— with coarse pitch thread M5 to M39 or with fine pitch thread M8 × 1 to M39 × 3;
— with thread tolerances in accordance with ISO 965-2;
— with mechanical properties in accordance with ISO 898-2;
Prevailing torque values specified in this standard are based on laboratory test conditions.
NOTE 1 Actual prevailing torques in practical application can vary.
NOTE 2 All metal type nuts conforming to the requirements of this International Standard are used in
applications ranging from −50 °C to +150 °C.
NOTE 3 Non-metallic insert type nuts conforming to the requirements of this International Standard are used
in applications ranging from −50 °C to +120 °C.
WARNING — Temperatures outside the ambient temperature range can influence the functional
properties (torque/clamp force and prevailing torque properties), see Annex A.
- Standard27 pagesEnglish languagesale 10% offe-Library read for×1 day
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.
- Standard20 pagesEnglish languagesale 10% offe-Library read for×1 day
- Draft21 pagesEnglish languagesale 10% offe-Library read for×1 day
- 29-Sep-2014
- 23-Mar-2015
- 21.060.10
- 21.060.20
- 89/106/EEC
- 97/23/EC
- ISEL
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.
- Standard28 pagesEnglish languagesale 10% offe-Library read for×1 day
- Draft28 pagesEnglish languagesale 10% offe-Library read for×1 day
- 30-Oct-2014
- 22-Mar-2015
- 21.060.10
- 21.060.20
- 89/106/EEC
- 97/23/EC
- ISEL
EN ISO 21670 specifies characteristics for hexagon weld nuts with flange, with sizes M5 to M16 (coarse thread) or D = 8 mm to 16 mm (fine pitch thread), of product grade A. Weld nuts conforming to this International Standard are suitable for use with bolts of property classes up to 10.9 according to ISO 898-1.
- Standard12 pagesEnglish languagesale 10% offe-Library read for×1 day
- Draft10 pagesEnglish languagesale 10% offe-Library read for×1 day
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