EN ISO 898-6:1995
(Main)Mechanical properties of fasteners - Part 6: Nuts with specified proof load values - Fine pitch thread (ISO 898-6:1994)
Mechanical properties of fasteners - Part 6: Nuts with specified proof load values - Fine pitch thread (ISO 898-6:1994)
Cancels and replaces the first edition (1988). Specifies the mechanical properties of nuts with specified proof load values when tested at an ambient temperature range of +10 °C to +35 °C. Applies to nuts with nominal thread diameters from 8 mm up to and including 39 mm, of triangular ISO thread, with diameter/pitch combinations in accordance with ISO 261, with thread tolerances 6H in accordance with ISO 965-1 and 965-2, with specific mechanical requirements, with widths across flats as specified in ISO 272, with nominal heights greater than or equal to 0,5d, made of carbon steel or alloy steel. Does not apply to nuts requiring special properties as weldability, prevailing torque performance, corrosion resistance, ability to withstand temperatures above +300 °C or below -50 °C.
Mechanische Eigenschaften von Verbindungselementen - Teil 6: Muttern mit festgelegten Prüfkräften - Feingewinde (ISO 898-6:1994)
Dieser Teil von ISO 898 enthält Festlegungen über die mechanischen Eigenschaften von Muttern mit festgelegten Prüfkräften, wenn bei einer Temperatur zwischen 10 °C und 35 °C geprüft wird. Mechanische und physikalische Eigenschaften ändern sich mit der Temperatur und der Festigkeitsklasse. Produkte in Übereinstimmung mit dieser Norm sind nur im Bereich der Umgebungstemperatur bewertet und bahalten möglicherweise bei höheren oder niedrigen Temperaturen die festgelegten physikalischen Eigenschaften nicht bei.
Caractéristiques mécaniques des éléments de fixation - Partie 6: Ecrous avec charges d'épreuve spécifiées - Filetage à pas fin (ISO 898-6:1994)
La présente partie de l'ISO 898 prescrit les caractéristiques mécaniques des écrous avec charges d'épreuve spécifiées, essayés à une gamme de températures ambiantes de + 10 °C à + 35 °C. Les caractéristiques mécaniques et physiques varient en fonction de la température et de la classe de qualité. Les produits en conformité avec les exigences de la présente partie de l'ISO 898 sont évalués uniquement à la fourchette de températures ambiantes et ne peuvent pas maintenir les caractéristiques physiques déterminées à des températures plus hautes et plus basses. Une modification sensible des caractéristiques peut intervenir pour des températures inférieures ou supérieures à la fourchette de températures ambiantes. L'utilisateur doit s'assurer que les caractéristiques mécaniques et physiques des éléments de fixation utilisés au-dessus ou en dessous de la température ambiante sont valables pour ses conditions d'utilisation particulières. La présente partie de l'ISO 898 s'applique aux écrous
de diamètre nominal de filetage, d, de 8 mm à 39 mm inclus (filetage à pas fin);
à filetage ISO triangulaire de diamètres et de pas conformes à l'ISO 68 et à l'ISO 262 (filetage à pas fin);
de combinaisons diamètre/pas conformes à l'ISO 261 (filetage à pas fin);
de tolérance de filetage 6H conforme à l'ISO 965-1 et à l'ISO 965-2) ;
présentant des caractéristiques mécaniques spécifiques;
de cotes surplats conformes à 498 l'ISO 272;
de hauteur nominale supérieure ou égale à 0,5d;
fabriqués en acier au carbone ou en acier allié.
Elle ne s'applique pas aux écrous pour lesquels on exige des caractéristiques spéciales telles que
soudabilité;
capacité de freinage (voir ISO 2320);
résistance à la corrosion (voir ISO 3506);
résistance à des températures supérieures à + 300 °C ou inférieures à - 50 °C.
Mehanske lastnosti veznih elementov - 6. del: Matice z drobnim navojem z določeno preskušeno obremenitvijo
General Information
- Status
- Withdrawn
- Publication Date
- 21-Nov-1995
- Withdrawal Date
- 14-Mar-2012
- Technical Committee
- CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 15-Mar-2012
- Completion Date
- 15-Mar-2012
Relations
- Effective Date
- 11-Apr-2012
Frequently Asked Questions
EN ISO 898-6:1995 is a standard published by the European Committee for Standardization (CEN). Its full title is "Mechanical properties of fasteners - Part 6: Nuts with specified proof load values - Fine pitch thread (ISO 898-6:1994)". This standard covers: Cancels and replaces the first edition (1988). Specifies the mechanical properties of nuts with specified proof load values when tested at an ambient temperature range of +10 °C to +35 °C. Applies to nuts with nominal thread diameters from 8 mm up to and including 39 mm, of triangular ISO thread, with diameter/pitch combinations in accordance with ISO 261, with thread tolerances 6H in accordance with ISO 965-1 and 965-2, with specific mechanical requirements, with widths across flats as specified in ISO 272, with nominal heights greater than or equal to 0,5d, made of carbon steel or alloy steel. Does not apply to nuts requiring special properties as weldability, prevailing torque performance, corrosion resistance, ability to withstand temperatures above +300 °C or below -50 °C.
Cancels and replaces the first edition (1988). Specifies the mechanical properties of nuts with specified proof load values when tested at an ambient temperature range of +10 °C to +35 °C. Applies to nuts with nominal thread diameters from 8 mm up to and including 39 mm, of triangular ISO thread, with diameter/pitch combinations in accordance with ISO 261, with thread tolerances 6H in accordance with ISO 965-1 and 965-2, with specific mechanical requirements, with widths across flats as specified in ISO 272, with nominal heights greater than or equal to 0,5d, made of carbon steel or alloy steel. Does not apply to nuts requiring special properties as weldability, prevailing torque performance, corrosion resistance, ability to withstand temperatures above +300 °C or below -50 °C.
EN ISO 898-6:1995 is classified under the following ICS (International Classification for Standards) categories: 21.060.20 - Nuts. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 898-6:1995 has the following relationships with other standards: It is inter standard links to EN ISO 898-2:2012. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN ISO 898-6:1995 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Mechanische Eigenschaften von Verbindungselementen - Teil 6: Muttern mit festgelegten Prüfkräften - Feingewinde (ISO 898-6:1994)Caractéristiques mécaniques des éléments de fixation - Partie 6: Ecrous avec charges d'épreuve spécifiées - Filetage a pas fin (ISO 898-6:1994)Mechanical properties of fasteners - Part 6: Nuts with specified proof load values - Fine pitch thread (ISO 898-6:1994)21.060.20MaticeNutsICS:Ta slovenski standard je istoveten z:EN ISO 898-6:1995SIST EN ISO 898-6:1996en01-april-1996SIST EN ISO 898-6:1996SLOVENSKI
STANDARD
INTERNATIONAL STANDARD Is0 898-6 Second edition 1994-l 2-15 Mechanical properties of fasteners - Part 6: Nuts with specified proof load values - Fine pitch thread Caractkistiques mbcaniques des Mments de fixation - Partie 6: krous avec charges d’8preuve spkifikes - Filetage 2 pas fin Reference number IS0 898-6:1994(E) SIST EN ISO 898-6:1996
Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 898-6 was prepared by Technical Committee lSO/TC 2, Fasteners, Subcommittee SC 1, Mechanical properties of fasteners. This second edition cancels and replaces the first edition (IS0 898-6:1988), which has been technically revised. IS0 898 consists of the following parts, under the general title Mechanical properties of fasteners: - Part 1: Bolts, screws and studs - Part 2: Nuts with specified proof load values - Coarse thread - Part 5: Set screws and similar threaded fasteners not under tensile stresses - Part 6: Nuts with specified proof load values - Fine pitch thread - Part 7: Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm 0 IS0 1994 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN ISO 898-6:1996
INTERNATIONAL STANDARD 0 IS0 IS0 898-6: 1994(E) Mechanical properties of fasteners - Part 6: Nuts with specified proof load values - Fine pitch thread 1 Scope This part of IS0 898 specifies the mechanical proper- ties of nuts with specified proof load values when tested at an ambient temperature range of + 10 “C to + 35 “C. Mechanical and physical properties will vary with respect to temperature and property class. Products conforming to the requirements of this part of IS0 898 are evaluated only at the ambient tem- perature range and may not retain the specified physical properties at higher and lower temperatures. At temperatures higher or lower than the ambient temperature range, a significant change in properties may occur. When fasteners are to be used above or below the ambient temperature range, it is the re- sponsibility of the user to ensure that the mechanical and physical properties are suitable for his particular service conditions. This part of IS0 898 applies to nuts - with nominal thread diameters, d, from 8 mm up to and including 39 mm (fine pitch thread); - of triangular IS0 thread and with diameters and pitches in accordance with IS0 68 and IS0 262 (fine pitch thread); - with diameter/pitch combinations in accordance with IS0 261 (fine pitch thread); - with thread tolerances 6H in accordance with IS0 965-l and 965-2 (see note 2); - with specific mechanical requirements; - with widths across flats as specified in IS0 272; - with nominal heights greater than or equal to 0,5d”; - made of carbon steel or alloy steel (see note 1 It does not apply to nuts requiring special proper such as - weldability; - corrosion resistance (see IS0 3506); - ability to withstand temperatures above or below - 50 “C. (However, see note 1. NOTES I Nuts made from free-cutting steel should no above + 250 “C. 1 . ties - prevailing torque performance (see IS0 2320); t300 "C be used 2 With thread tolerances other or larger than 6H, a de- crease in the stripping strength should be considered (see table I). I) In IS0 898:1988, the symbol D was used. 1 SIST EN ISO 898-6:1996
Table 1 - Reduction in thread strength Nominal thread diameter Test load, % d Thread tolerances mm 6H 7H 6G 8~ d< 16 100 96 97,5 16 0,8d (effective lengths of thread > 0,6d): Nuts of style I and style 2 Nuts with nominal heights 2 0,8d (effective lengths of thread 2 0,6d) are designated by a number to indi- cate the maximum appropriate property class of bolts with which they may be mated. Failure of threaded fasteners due to over-tightening can occur by bolt shank fracture or by stripping of the threads of the nut and/or bolt. Shank fracture is sud- den and therefore easily noticed. Stripping is gradual and therefore difficult to detect and this introduces the danger of partly failed fasteners being left in as- semblies. It would therefore be desirable to design threaded connections so that their mode of failure would al- ways be by shank fracture but, unfortunately, because of the many variables which govern stripping strength (nut and bolt material strengths, thread clearances, across-flats dimensions, etc.), nuts would have to be excessively thick to guarantee this mode in all cases. A bolt or screw of thread diameter 8 mm to 39 mm assembled with a nut of the appropriate property class, in accordance with table 2, is intended to pro- vide an assembly capable of being tightened to the bolt proof load without thread stripping occurring. 2) To be published. SIST EN ISO 898-6:1996
IS0 898-6:1994(E)- Table 2 - Designation system for nuts with nominal heights 2 0,8d I I Property class of nut ’ Mating bolts Nominal thread Property class diameter range Nuts style 1 style 2 Nominal thread diameter range 5 6 8 10 12 3.6; 4.6; 4.8 5.6; 5.8 6.8 8.8 10.9 12.9 mm d< 39 d< 39 d< 39 d< 39 d< 16 mm d< 39 d< 39 d< 39 d< 16 d< 16 d,< 39 d< 16 NOTE - In general, nuts of a higher property class can replace nuts of a lower property class. This is advisable for a bolt/nut assembly going into a stress higher than the yield stress or the stress under proof load of the bolt. However, should tightening beyond bolt proof load take place, the nut design is intended to ensure at least 10 % of the over-tightened assemblies fail through bolt breakage in order to warn the user that the installation practice is not appropriate. NOTE 3 For more detailed information on the strength of screw thread assemblies and for the styles of nuts, see IS0 898-2:1992, annex A. 3.2 Nuts with nominal heights > 0,5d and < 0,8d (effective heights of thread 2 0,4d and < 0,6d) Nuts with nominal heights 2 0,5d and -C 0,8d (effec- tive height of thread > 0,4d and < 0,6d) are desig- nated by a combination of two numbers: the second indicates the nominal stress under proof load on a hardened test mandrel, while the first indicates that the loadability of a bolt-nut assembly is reduced in comparison with the loadability on a hardened test mandrel and also in comparison with a bolt-nut as- sembly des
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EN ISO 898-6:1995 표준은 특정 인장 강도를 가진 너트의 기계적 특성을 명시하고 있으며, 그 범위는 +10 °C에서 +35 °C의 환경 온도에서 시험될 때의 성질에 중점을 둡니다. 이 표준은 8 mm에서 39 mm까지의 공칭 나사 직경을 가진 삼각형 ISO 나사에 적용되며, ISO 261에 따른 직경/피치 조합과 ISO 965-1 및 ISO 965-2에 따른 나사 공차 6H를 포함합니다. 이 표준의 강점은 너트의 특정 기계적 요구 사항을 충족하도록 설계되었다는 점입니다. 너트의 너비는 ISO 272에서 규정한 대로 설정되어 있으며, 공칭 높이는 0.5d 이상인 탄소강 또는 합금강으로 제작됩니다. 이러한 기계적 특성에 대한 명확한 규정 덕분에 사용자는 신뢰성이 높은 나사를 제작할 수 있습니다. 또한 EN ISO 898-6:1995는 전문가들이 너트의 성능을 평가하고 설계할 때 참고할 수 있는 중요한 지침을 제공합니다. 그러나 이 표준은 용접성, 저항 토크 성능, 내식성, 고온(300 °C 초과) 및 저온(-50 °C 이하)에 견딜 수 있는 특성을 요구하는 너트에는 적용되지 않으므로, 사용자는 적용 범위에 대한 이해가 필요합니다. 이를 통해 다양한 산업 분야에 맞춤형 솔루션을 제공하는 데 중요한 역할을 합니다. 표준은 전반적으로 기계적 요구 사항의 명확한 정의로 인해 품질 관리와 안전성을 높이는 데 기여하고 있습니다.
The standard EN ISO 898-6:1995 provides a comprehensive framework for assessing the mechanical properties of nuts, specifically those with specified proof load values and fine pitch threads. This standard is crucial for manufacturers and engineers in ensuring that fasteners meet required performance criteria in various applications. One of the notable strengths of EN ISO 898-6:1995 is its precise specification of testing conditions, including an ambient temperature range of +10 °C to +35 °C. This scope ensures that the mechanical properties are relevant and applicable under typical operating conditions. Additionally, it systematically covers nuts with nominal thread diameters ranging from 8 mm to 39 mm, accommodating a wide variety of sizes and applications, which enhances its applicability across different industries. The standard also emphasizes the importance of adherence to established tolerances and specifications, such as the triangular ISO thread, which must align with the diameter/pitch combinations outlined in ISO 261. The inclusion of specific mechanical requirements strengthens the standard by ensuring that users are aware of the necessary properties that nuts must possess to be deemed acceptable for specific load conditions. Moreover, the mandate for widths across flats as specified in ISO 272 and nominal heights greater than or equal to 0.5d fosters uniformity in manufacturing processes, promoting interchangeability and compatibility between different fasteners. By targeting nuts made of carbon steel or alloy steel, the standard effectively narrows its focus to materials that are widely used and possess desirable mechanical properties. However, it is essential to note that EN ISO 898-6:1995 does not apply to nuts that require special properties such as weldability, prevailing torque performance, or enhanced corrosion resistance, nor to those designed to withstand extreme temperatures beyond +300 °C or below -50 °C. This limitation is a critical aspect to consider as it directs users to supplementary standards or specifications for such specialized applications. In conclusion, the EN ISO 898-6:1995 standard is a robust document that enhances the understanding and regulation of mechanical properties in fasteners. Its precise definitions, rigorous testing criteria, and focus on commonly used materials underscore its relevance in the field, making it an essential reference for those involved in the design and application of fasteners.
La norme EN ISO 898-6:1995 porte sur les propriétés mécaniques des écrous à valeurs de charge de rupture spécifiées, en particulier ceux à filetage fin. Cette norme remplace la première édition de 1988 et a pour but de définir les caractéristiques mécaniques des écrous soumis à des tests de charge dans une plage de température ambiante de +10 °C à +35 °C. Le champ d'application de cette norme est particulièrement pertinent pour les écrous ayant des diamètres nominaux de filetage variant de 8 mm à 39 mm, conformément au filetage ISO triangulaire. Elle définit les combinaisons de diamètre et de pas en accord avec ISO 261, tout en respectant les tolérances de filetage de 6H selon les normes ISO 965-1 et ISO 965-2. Un des grands atouts de cette norme est sa précision dans la spécification des exigences mécaniques, assurant ainsi une qualité et une fiabilité accrues des écrous fabriqués. Les largeurs entre plans spécifiées selon ISO 272, ainsi que les hauteurs nominales supérieures ou égales à 0,5d, renforcent la standardisation des composants, ce qui est essentiel pour les applications industrielles. Il est important de noter que cette norme ne s'applique pas aux écrous nécessitant des propriétés particulières telles que la soudabilité, la performance de couple de maintien, la résistance à la corrosion ou la capacité à supporter des températures extrêmes supérieures à +300 °C ou inférieures à -50 °C, ce qui clarifie les conditions d'utilisation et garantit que seuls les écrous standardisés selon ces critères spécifiques seront couverts. En résumé, la norme EN ISO 898-6:1995 est une référence clé pour la fabrication et l'évaluation des écrous en acier au carbone ou en acier légé, jouant un rôle crucial dans l'assurance qualité et la standardisation au sein de l'industrie.
EN ISO 898-6:1995は、機械的特性を持つナットに関する重要な標準であり、その適用範囲は明確に定義されています。この文書は、1988年に発行された初版を取り消し、新たに展開されたもので、ナットの引張強度値が指定された状態での機械的特性を示しています。 この標準の強みは、使用されるナットのタイプを細部にわたって定義していることです。具体的には、ナットは三角形のISOスレッドを有し、ねじ直径が8mmから39mmまでの範囲で、ISO 261に従った直径/ピッチの組み合わせを持つことが求められます。また、ねじの公差はISO 965-1および965-2に従い、特定の機械的要件を満たす必要があります。 さらに、EN ISO 898-6:1995は、ナットの幅や高さに関する詳細な仕様も含まれており、これによりナットの設計と製造プロセスに対する指針が提供されます。特に、幅はISO 272の規格に従い、名目高さは0.5d以上であることが求められます。これは、ナットが適切な使用に耐えうるための重要な指標となります。 この標準は、炭素鋼や合金鋼で製造されたナットに適用されることが明記されていますが、溶接性、保持トルク性能、耐腐食性、高温および低温に耐える特性が求められるナットには適用されないため、使用用途に応じた選定が必要です。 このように、EN ISO 898-6:1995はその機械的特性の定義において、精密な範囲と要件を提供しており、ファスナー分野における標準化の重要性を示しています。特に、信頼性が求められる製品においては、この標準が製品の品質を保証する要素となります。
Die Norm EN ISO 898-6:1995 stellt einen wichtigen Bestandteil in der Dokumentation der mechanischen Eigenschaften von Befestigungselementen dar, insbesondere von Muttern mit festgelegten Vorspannwerten. Der Umfang dieser Norm umfasst die definierten mechanischen Eigenschaften von Muttern, die bei Temperaturen zwischen +10 °C und +35 °C getestet werden. Dies ist von großer Bedeutung für Anwendungen, bei denen eine zuverlässige Verbindung unter festgelegten Temperaturbedingungen gewährleistet werden muss. Ein herausragendes Merkmal dieser Norm ist die klare Spezifikation für Muttern mit einem Nenndurchmesser von 8 mm bis einschließlich 39 mm, die eine dreieckige ISO-Gewindeform aufweisen. Die Anforderungen der Norm an Durchmesser- und Steigungskombinationen gemäß ISO 261 sowie die Gewindetoleranzen 6H nach ISO 965-1 und 965-2 geben Herstellern und Nutzern die notwendige Sicherheit bezüglich der Qualität und der Interoperabilität der Produkte. Zusätzlich hebt die Norm spezifische mechanische Anforderungen hervor, die an diese Muttern gestellt werden. Sie definiert die Breiten über die Flächen gemäß ISO 272 und stellt sicher, dass die nominalen Höhen der Muttern größer oder gleich 0,5d sind. Diese klaren Kriterien und Vorgaben verbessern die Konsistenz und Zuverlässigkeit der Produkte erheblich und sind von zentraler Bedeutung in Branchen, die hohe Anforderungen an Befestigungselemente stellen. Die Norm schließt bestimmte Muttern aus, die besondere Eigenschaften wie Schweißbarkeit, das Verhalten unter Vorzugsmoment, Korrosionsbeständigkeit oder die Fähigkeit, extremen Temperaturen über +300 °C oder unter -50 °C standzuhalten, erfordern. Diese Ausschlüsse sind wichtig, um sicherzustellen, dass die Norm sich auf spezifische Anwendungen konzentriert und nicht in Bereiche eindringt, die andere Standards und Prüfmethoden erfordern. Insgesamt ist die EN ISO 898-6:1995 eine relevante und kraftvolle Norm, die sicherstellt, dass die mechanischen Eigenschaften von Muttern mit festgelegten Vorspannwerten zuverlässig und konsistent sind. Durch ihre umfassenden Spezifikationen stellt sie sicher, dass Produkte den branchenüblichen Anforderungen gerecht werden und somit die Sicherheit und Qualität der hergestellten Verbindungen garantieren.
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