EN 1665:1997
(Main)Hexagon bolts with flange - Heavy series
Hexagon bolts with flange - Heavy series
This European Standard gives specifications for hexagon bolts with flange, heavyseries, with threads from M5 up to and including M20 and property classes 8.8, 10.9 and A2-70.
Sechskantschrauben mit Flansch - Schwere Reihe
Diese Europäische Norm enthält Festlegungen für Sechskantschrauben mit Flansch, schwere Reihe, mit Gewinde von M5 bis M20 und mit Festigkeitsklassen 8.8, 10.9 und A2-70.
Vis à tête hexagonale à embase cylindro-tronconique - Série large
La présente Norme européenne définit les caractéristiques des vis à tête hexagonale à embase cylindro-tronconique de série large, de filetage M5 à M20 inclus et classes de qualité 8.8, 10.9 et A2-70.
Vijaki s šestrobo glavo s poševnim krajcem - Težka izvedba
General Information
- Status
- Published
- Publication Date
- 20-May-1997
- Technical Committee
- CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 13-Apr-2023
- Completion Date
- 21-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 22-Dec-2008
- Effective Date
- 22-Dec-2008
Overview
EN 1665:1997 is a European Standard developed by CEN that specifies the technical requirements for hexagon bolts with flange, heavy series. This standard covers bolts with thread sizes ranging from M5 up to and including M20. It includes bolts manufactured in property classes 8.8, 10.9, and corrosion-resistant grade A2-70. These heavy series flange hex bolts are designed for demanding mechanical fastening applications where enhanced strength and reliability are required.
The standard ensures consistency in dimensions, mechanical properties, and performance characteristics, facilitating compatibility and interchangeability across various industries in Europe and beyond. EN 1665:1997 contributes significantly to quality assurance in bolt manufacturing and helps engineers select the appropriate fasteners for their projects.
Key Topics
- Bolt Type: Hexagon bolts with flange in heavy series specification.
- Thread Sizes: Standardized thread diameters covering M5 to M20.
- Property Classes:
- 8.8 - Medium carbon steel, quenched and tempered bolts.
- 10.9 - High tensile steel bolts with higher strength.
- A2-70 - Stainless steel bolts offering corrosion resistance.
- Dimensional Standards: Clear definition of bolt head dimensions, flange size, thread length, and overall bolt length.
- Mechanical Properties: Tensile strength and hardness criteria tailored for heavy-duty applications.
- Marking & Identification: Requirements for clear marking to indicate property class and manufacturer identification.
Applications
EN 1665 heavy series hexagon bolts with flange are widely used in various sectors that demand robust and reliable fasteners. Their flange design distributes the load over a larger surface area, reducing the risk of damage to bolted parts and eliminating the need for washers in many cases. Typical applications include:
- Mechanical Engineering: Assembly of machines and heavy equipment that require strong fastening solutions.
- Automotive Industry: Structural and engine components benefiting from enhanced strength bolts.
- Construction: Steel frameworks, bridges, and heavy structures where high tensile strength bolts improve safety and durability.
- Marine and Chemical Environments: Use of A2-70 stainless steel bolts to prevent corrosion in harsh conditions.
- Maintenance and Repairs: Replacement bolts meeting stringent standards to ensure safety and performance.
Related Standards
To ensure comprehensive compliance and compatibility, EN 1665:1997 is often referenced alongside other European and international standards related to fasteners:
- EN ISO 4014 - Hexagon head bolts – Product grades A and B.
- EN ISO 4032 - Hexagon nuts.
- EN ISO 4762 - Hexagon socket head cap screws.
- EN ISO 3506 - Mechanical properties of corrosion-resistant stainless steel fasteners.
- ISO 898-1 - Mechanical properties of fasteners made of carbon steel and alloy steel.
Using EN 1665 in conjunction with these standards ensures complete control over hexagon bolt specifications, from mechanical properties and dimensions to corrosion resistance and installation guidelines.
Keywords: EN 1665, hexagon bolts with flange, heavy series bolts, M5 to M20 bolts, property class 8.8, property class 10.9, stainless steel A2-70 bolts, European Standard bolts, heavy duty fasteners, CEN standards, mechanical fasteners, flange bolts applications.
Frequently Asked Questions
EN 1665:1997 is a standard published by the European Committee for Standardization (CEN). Its full title is "Hexagon bolts with flange - Heavy series". This standard covers: This European Standard gives specifications for hexagon bolts with flange, heavyseries, with threads from M5 up to and including M20 and property classes 8.8, 10.9 and A2-70.
This European Standard gives specifications for hexagon bolts with flange, heavyseries, with threads from M5 up to and including M20 and property classes 8.8, 10.9 and A2-70.
EN 1665:1997 is classified under the following ICS (International Classification for Standards) categories: 21.060.10 - Bolts, screws, studs. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1665:1997 has the following relationships with other standards: It is inter standard links to EN 13347:2002, EN 1665:1997/AC:1998, EN 1665:1997/AC:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1665:1997 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vijaki s šestrobo glavo s poševnim krajcem - Težka izvedbaSechskantschrauben mit Flansch - Schwere ReiheVis a tete hexagonale a embase cylindro-tronconique - Série largeHexagon bolts with flange - Heavy series21.060.10Sorniki, vijaki, stebelni vi
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