The DIN 267 Part 9 standard specifies the technical delivery conditions for electroplated fasteners (bolts, screws, and nuts). While it is a widely referenced historical standard, it is important to note that it has been largely superseded or withdrawn in many jurisdictions in favor of international standards like ISO 4042. Summary of DIN 267 Part 9
Scope: Focuses on the technical requirements for fasteners that have undergone electroplating.
Coating Thickness: It outlines how the electroplated layer affects the thread tolerances, ensuring that the "zero line" is not exceeded for bolt threads or attained for nut threads after coating.
Hydrogen Embrittlement: Traditionally, this part of the DIN 267 series also addresses risks and testing related to hydrogen embrittlement in high-strength fasteners after the plating process.
Status: The 1968 and 1979 versions are common historical references, but modern designs typically point toward the DIN Media library for the latest consolidated standards. Direct Downloads and Reference Sheets
For detailed technical tables and tolerance positions related to this standard, you can refer to specialized fastener technical guides:
Fastener Comparison Guide: Provides a breakdown of DIN vs. ISO standards on Scribd.
Technical PDF Catalog: A broader collection of DIN 267 series standards is available via Maziyar Sanat.
Regarding the second part of your prompt, "develop a feature," could you clarify if you are looking for technical specifications to build a software feature (like a fastener calculator) or if you need engineering guidance on implementing a specific fastener feature in a mechanical design? Din 267 | PDF - Scribd
DIN 267 Part 9 PDF: A Comprehensive Overview
DIN 267 is a German standard that outlines the requirements for bolts, screws, and nuts. Part 9 of this standard specifically deals with the "Product grade A, hexalobular socket screws (Torx)".
What is DIN 267 Part 9?
DIN 267 Part 9 is a standard that specifies the dimensions, materials, and testing requirements for hexalobular socket screws, also known as Torx screws. These screws have a unique hexagonal recess in the head, which requires a Torx driver to tighten or loosen.
Key Features of DIN 267 Part 9
The standard covers the following aspects:
Benefits of Using DIN 267 Part 9
Using screws that comply with DIN 267 Part 9 offers several benefits, including:
Industries that Use DIN 267 Part 9
DIN 267 Part 9 is widely used in various industries, including:
How to Obtain a Copy of DIN 267 Part 9 PDF
A copy of DIN 267 Part 9 can be obtained from the Deutsches Institut für Normung (DIN) website or from a authorized distributor. The standard is available in PDF format, which can be easily downloaded and shared.
Conclusion
DIN 267 Part 9 is a widely used standard that specifies the requirements for hexalobular socket screws. The standard ensures that screws are manufactured to a consistent quality, reducing the risk of failure and improving overall reliability. By understanding the requirements of DIN 267 Part 9, manufacturers and users can ensure that their screws meet the necessary standards for performance, safety, and reliability.
DIN 267 Part 9 is a critical technical standard for the manufacturing and quality assurance of fasteners, specifically focusing on electroplated coatings
. It provides the technical conditions of delivery for components like bolts, screws, and nuts that require a galvanic finish. Core Focus of DIN 267-9
The standard's primary mission is to manage how protective coatings affect the physical fit and performance of threaded fasteners. Layer Thickness Specification
: It defines the permissible thickness of electroplated layers to ensure they provide adequate corrosion protection without interfering with the fastener's assembly. Thread Tolerance Management din 267 part 9 pdf
: A major focus is ensuring that the coating does not cause a bolt thread to exceed its zero line or a nut thread to fall below it. It references
for metric screw thread tolerances (specifically positions g, f, and e for bolts; H and G for nuts). Technical Conditions
: It acts as a bridge between raw manufacturing and the finished, plated product, setting the "rules of engagement" for how these coatings are applied, tested, and designated. Why This Standard Matters (The "Interesting" Bit)
In the world of precision engineering, adding even a few microns of material (like zinc or nickel) can be the difference between a bolt that spins freely and one that seizes. DIN 267-9 ensures that: Zero-Line Integrity
: The "zero line" is the theoretical boundary of a thread. If a coating is too thick, the bolt won't fit into the nut. DIN 267-9 mandates that the coating must not push the bolt thread beyond this limit. Harmonization
: It works in tandem with other parts of the DIN 267 series, such as Part 5 for acceptance inspections Part 19 for surface discontinuities Modern Replacement
: While still referenced in many legacy projects, this standard has largely been superseded by
, which is the current international benchmark for electroplated coating systems on fasteners. Accessing the Document While the official, paid version is available through the DIN Media portal
, you can often find technical summaries or older archived versions on platforms like Din 926 | PDF - Scribd
DIN 267 Part 9 is a standard that outlines the technical delivery conditions for mechanical fasteners with electroplated coatings, primarily focusing on bolts, screws, and nuts . It provides essential specifications for layer thickness, thread tolerances after plating, and testing methods to ensure fasteners maintain their mechanical integrity while gaining corrosion resistance . Key Technical Specifications
Layer Thickness: The standard is primarily concerned with defining and testing the thickness of electroplated layers . This is critical because excessive coating can interfere with thread fit . Thread Tolerances:
It specifies that coatings must not cause the thread dimensions to exceed the "zero line" for bolt threads or fail to reach it for nut threads .
Basis for these thicknesses is grounded in ISO metric screw thread tolerances (DIN 13), specifically positions for bolts, and for nuts .
Designation Code: Plating is often identified by a three-part code: Coating Metal: A capital letter (e.g., A for Zinc) . Minimum Thickness: A number representing the layer depth .
Finish & After-treatment: A capital letter for gloss degree or chromating . Scope and Applications
Fastener Types: While mainly for bolts and nuts, it applies to various mechanical fasteners requiring electroplating .
Material Compatibility: It is frequently used for austenitic steel grades to bolster corrosion resistance in harsh environments .
Standard Status: Note that DIN 267-9 has been widely superseded by DIN ISO 4042 . Engineers often refer back to Part 9 for legacy specifications or specialized technical delivery conditions . Critical Considerations
If a specific, non-standard plating thickness is requested, it may require a larger "fundamental deviation" during manufacturing. This can potentially weaken the pull-out resistance of the screw/nut assembly if not carefully calculated .
DIN 267 Part 9 (or DIN 267-9) defines the technical delivery conditions for mechanical fasteners with electroplated coatings
. It establishes the standards for how coatings—such as zinc or cadmium—should be applied, measured, and designated on bolts, screws, and nuts. Core Content of DIN 267 Part 9
The standard focuses on ensuring that the addition of a protective layer does not interfere with the mechanical function of the fastener.
Applies primarily to threaded fasteners (M1.6 to M36) and other mechanical parts receiving electrolytic metallic layers. Layer Thickness:
Specifies minimum required thicknesses and how they must be measured at specific points on the fastener. Thread Tolerances:
Ensures that the coating thickness does not cause the thread to exceed its zero line (maximum material limit), which would prevent proper assembly. Designation Code System: Uses a code (e.g., A2K) to describe the coating: First Letter: The coating metal (e.g., A for Zinc). The minimum layer thickness (e.g., 2 for Second Letter:
The degree of gloss and any after-treatment like passivation or chromating. Hydrogen Embrittlement: The DIN 267 Part 9 standard specifies the
Includes guidelines for baking (heat treatment) to reduce the risk of hydrogen-induced brittle fracture in high-strength fasteners after plating. Status and Replacements
While many manufacturers still refer to DIN 267-9, it has largely been superseded by international standards to unify global engineering practices. Фикс Трейд as an active DIN standard. Primary Replacement:
(Fasteners — Electroplated coating systems) is the direct modern equivalent. Related Standards: It often works alongside (for thread tolerances) and (for chromate treatments).
Full technical details and historical versions can be viewed on platforms like Fasten.one plating codes (like A2K or B3C) used in this standard? F Surface Coatings | PDF | Corrosion | Rust - Scribd
DIN 267 Part 9 is a withdrawn German technical standard that specified the delivery conditions for mechanical fasteners with electroplated coatings. It has been largely replaced by the international standard ISO 4042. 🛠️ Technical Focus
The standard primarily addressed how electroplating affects the dimensions and mechanical integrity of fasteners like bolts, screws, and nuts.
Layer Thickness: Provided specific requirements for coating thickness and how to measure it.
Dimensional Limits: Established how coatings must not exceed the zero line of the thread tolerance, ensuring parts still fit after plating.
Hydrogen Embrittlement: Included warnings and precautions for high-strength fasteners (hardness >400 HV) to avoid "brittle fracture" caused by the plating process.
Designation System: Created a code system (e.g., A2K) to specify the coating metal, thickness, and degree of gloss/finish. 📉 Current Status Status: Withdrawn (Superseded). Successor: Replaced by DIN EN ISO 4042.
Usage: While obsolete for new designs, it is still referenced in legacy engineering drawings and maintenance manuals for older machinery. 📋 Standard Comparison: DIN 267-9 vs. ISO 4042 DIN 267 Part 9 (Legacy) ISO 4042 (Current) Scope National German standard for plated fasteners. International standard for electroplated coatings. Coating Codes Uses legacy codes like A2K, A3J. Uses modern alphanumeric codes for batch tracking. Embrittlement Focuses on hardness >400 HV. Enhanced guidelines for high-strength classes (10.9, 12.9). Key Sections (Standard Contents) Din 267 | PDF - Scribd
DIN 267 Part 9: Electroplated Coatings for Mechanical Fasteners
The DIN 267 Part 9 standard is a critical technical document established by the German Institute for Standardization (DIN). It defines the technical delivery conditions for mechanical fasteners with electroplated coatings, primarily focusing on bolts, screws, and nuts. Current Status & Replacement
It is important for engineers and procurement specialists to note that DIN 267-9 has been withdrawn and superseded.
Primary Successor: DIN ISO 4042 ("Fasteners — Electroplated coating systems").
Transition: While many legacy designs still reference DIN 267 Part 9, modern manufacturing typically follows ISO 4042 to ensure international compatibility and adherence to updated environmental regulations regarding coating materials. Scope and Technical Specifications
The standard provides a framework for applying protective layers to fasteners to enhance corrosion resistance and aesthetic appearance. Key specifications include: Din 267 | PDF - Scribd
While the standard is withdrawn, some companies need the old PDF for legacy drawings, maintenance of old machinery, or historical audits. Here is how to legally obtain a PDF copy:
A: No, it is not illegal, but it is not "presumed compliant" with EU Machinery Directive 2006/42/EC. If your product fails and you used a withdrawn standard, you will lose liability lawsuits.
DIN 267 is a multi-part German standard covering technical delivery conditions for mechanical fasteners. Part 9 specifically addresses mechanical properties of fasteners made of steels with specified elevated temperature properties. In simpler terms, it tells engineers and manufacturers how bolts, screws, and studs must perform when the heat is on—literally.
While general-purpose fasteners (e.g., property classes 8.8, 10.9, 12.9) lose strength at high temperatures, DIN 267-9 covers materials designed to retain mechanical integrity in environments ranging from approximately 300°C to over 600°C.
DIN 267 has been partially withdrawn or superseded by ISO standards. For active equivalents:
To obtain the actual PDF:
The DIN 267 Part 9 standard dictates the technical delivery conditions for mechanical fasteners with electroplated coatings.
If you are looking for the official PDF or specific details regarding this norm, use this overview regarding its function, contents, and current standing in modern engineering. 📄 Overview of DIN 267 Part 9
The Deutsches Institut für Normung (German Institute for Standardization) developed this document to regulate the post-manufacturing electroplating of standard fasteners like bolts, screws, and nuts. Focus: Electroplated coatings on threaded fasteners. Dimensions : The standard specifies the dimensions of
Key Objective: To prevent the coating from making the threads too thick, ensuring the fasteners still screw together properly without sacrificing corrosion resistance.
Crucial Risk Management: Regulates baking processes after plating to minimize the risk of hydrogen embrittlement, which is highly dangerous for high-tensile fasteners. 🛠️ Key Technical Contents
If you analyze the contents of the document, it generally outlines several critical parameters:
Layer Thickness: Prescribes how thick the protective plating (such as zinc or cadmium) can legally be on the external and internal threads.
Dimensional Impact: Focuses on the "fundamental deviation" of the screw threads. Thick electroplating can exceed tolerance limits, causing parts to jam during assembly.
Corrosion Protection Testing: Details the duration and conditions for standard testing (like salt spray tests) to prove adequate protection against rust.
Designation System: Explains the specific letter and number codes used in blueprints and orders to demand exactly which coating process and thickness are required. ⚠️ Important: Current Status & Modern Replacements
You cannot use DIN 267-9 for new engineering designs. It is an inactive, withdrawn standard. Old Standard Modern Replacement DIN 267 Part 9 ❌ Withdrawn / Superseded
DIN EN ISO 4042 (Fasteners — Electroplated coating systems)
Over the last few decades, global manufacturing shifted from regional German "DIN" norms to unified global "ISO" norms. For any modern project, you should reference ISO 4042 instead. 📥 How to Find the PDF
Because this is a copyrighted, protected industrial document, you cannot legally find full, official copies for free.
Official Digital Copy: You can legally purchase and download historical or equivalent PDF files from the official authorized distributor, DIN Media (formerly Beuth) .
Free References: Many fastener manufacturers host technical catalogs summarizing the tolerance tables of DIN 267 Part 9 and ISO 4042. Search for "Fastener Technical Manual PDF" to find these free engineering cheat sheets. Din 267 | PDF - Scribd
DIN 267 Part 9 is a standard established by the German Institute for Standardization ( ) that defines the
technical delivery conditions for mechanical fasteners with electroplated coatings Key Specifications
: It applies primarily to threaded fasteners like bolts and nuts but can extend to the entire range of mechanical fasteners. : The standard is mainly concerned with specifying layer thicknesses , their designation codes, and testing methods. Thread Tolerances
: It establishes that electroplated coatings must not cause the zero line (theoretical limit) of the thread to be exceeded for bolts or not attained for nuts. Designation System
: Coatings are identified by a code consisting of two capital letters and a number, indicating the metal type, minimum layer thickness, and degree of gloss/after-treatment. Current Status : This standard is superseded Replacement
: It has been largely replaced by international standards, specifically DIN EN ISO 4042 Compatibility
: Despite being superseded, many technical manuals and legacy specifications still refer to DIN 267 Part 9 for historical compliance or specific electroplating requirements. Standards.ie Comparisons DIN 267 Part 9 ISO 4042 (Successor) Primary Use National German standard for plated fasteners International standard for electroplated coatings Coating Codes Letter/Number system (e.g., A2K) Systematically optimized for global durability Availability Available as a legacy document (English/German) Active standard for modern manufacturing Din 267 | PDF - Scribd
This standard specifies mechanical properties, testing, and marking requirements for steel bolts, screws, and studs with reduced loadability – meaning the shank diameter is intentionally smaller than the nominal thread diameter (waisted or reduced shank) to control elongation, fracture location, or energy absorption under tensile load.
You will find many websites offering a free DIN 267 Part 9 PDF. Warning: Many of these are:
One reason engineers hunt for the old PDF is confusion over property classes. The tables have changed slightly.
Nut Property Classes (DIN 267-9 vs. ISO 898-2)
| Nut Property Class | DIN 267-9 (Old) | ISO 898-2 (New) | Compatible Bolt Class | | :--- | :--- | :--- | :--- | | 04 | Yes (Low carbon steel) | No (Obsolete) | 4.6 | | 4 | Yes | Yes | 4.6 / 4.8 | | 5 | Yes | Yes | 5.6 / 5.8 | | 6 | Yes | Yes | 6.8 | | 8 | Yes | Yes | 8.8 | | 10 | Yes | Yes | 10.9 | | 12 | Yes | Yes | 12.9 |
Note: Class 04 (very soft nuts) is no longer recognized in ISO standards. If your old drawing calls for DIN 267-9 Class 04, you must use Class 4 today.