Overview
EN ISO 14580:2011 is the international standard that specifies the characteristics and dimensions of hexalobular socket cheese head screws, also known as Torx socket cheese head screws. Developed and maintained by the European Committee for Standardization (CEN) in collaboration with the International Organization for Standardization (ISO), this standard covers product grade A screws with thread sizes ranging from M2 up to and including M10.
This standard ensures consistent quality, mechanical properties, and dimensional accuracy for screws used in various industrial and manufacturing applications. It supersedes the previous EN ISO 14580:2001 standard, providing updated specifications for enhanced performance and compatibility in fastener applications.
Key Topics
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Scope and Application
Covers hexalobular socket cheese head screws with metric thread sizes M2 to M10, detailing their physical characteristics and mechanical properties aligned with product grade A fasteners.
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Dimensional Specifications
Defines critical dimensions such as thread pitch, head height, socket size, and thread length, ensuring dimensional uniformity in manufacturing and quality control. The dimensions comply with ISO 225 and ISO 10664 standards for thread and socket geometry.
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Mechanical Properties and Material
Specifies mechanical property classes such as 4.8 and 5.8, with materials ranging from carbon steel to stainless steel and non-ferrous metals. Mechanical properties conform to ISO 898-1 for carbon/alloy steels and ISO 3506-1 for stainless steel.
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Tolerance and Surface Finish
Maintains thread tolerances according to ISO 4759-1 class 6g for precise fit and compatibility. Guidelines on surface coatings, including electroplated and non-electrolytically applied zinc flake coatings, refer to ISO 4042 and ISO 10683 standards, respectively.
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Testing and Inspection
Acceptance and surface discontinuity inspections are conducted as per ISO 3269 and ISO 6157-1 to guarantee reliability and performance during application.
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Designation System
Provides a clear method for screw identification, incorporating key parameters such as screw type, thread size, length, and mechanical property class. For example:
Hexalobular socket cheese head screw ISO 14580 - M5 × 20 - 4.8
Applications
Hexalobular socket cheese head screws standardized by EN ISO 14580:2011 are widely used in industries where secure fastening and torque control are crucial. Typical applications include:
- Automotive manufacturing – Reliable assembly components requiring tamper-resistant screw heads with high torque capacity.
- Electronics and electrical appliances – Compact, low-profile screws fitting tight spaces with precise torque control.
- Machinery and equipment – Durable fasteners that maintain integrity under mechanical stress and vibration.
- Consumer products – Enhanced aesthetic with clean heads and driver interfaces reducing cam-out.
- Construction and engineering – Fasteners that comply with stringent safety and mechanical standards for structural reliability.
These screws offer advantages like increased resistance to stripping, ease of installation with compatible tools, and consistent performance across different applications.
Related Standards
EN ISO 14580:2011 references and aligns with several key international standards essential for comprehensive fastener specification and quality assurance:
- ISO 261 – General-purpose metric screw threads – general plan.
- ISO 898-1 – Mechanical properties of fasteners made of carbon and alloy steel.
- ISO 965-2 – Tolerances for metric screw threads.
- ISO 4759-1 – Tolerances for bolts, screws, studs, and nuts.
- ISO 10664 – Hexalobular internal driving feature (Torx) specifications.
- ISO 3269 – Acceptance inspection of fasteners.
- ISO 4042 – Electroplated coatings for fasteners.
- ISO 10683 – Zinc flake coatings for corrosion protection.
In addition to these, standards like ISO 3506-1 cover stainless steel fasteners, and ISO 6157-1 addresses surface discontinuities to ensure product integrity.
EN ISO 14580:2011 remains a critical reference for manufacturers, engineers, and quality controllers involved in the production, selection, and use of hexalobular socket cheese head screws, supporting standardized manufacturing, enhanced durability, and reliable fastening solutions across global markets.
