The DIN 1624 standard primarily covers the technical delivery conditions for cold reduced mild unalloyed steel strip with widths up to 650 mm and thicknesses up to 6 mm . 🛠️ Key Technical Specifications The standard defines materials used for mechanical treatment and surface refining, such as electroplating, but not for quench hardening or tempering. Materials: Mild unalloyed steels (e.g., St 2, St 3, St 4). Dimensions: Widths ≤ 650 mm; Thicknesses ≤ 6 mm. Surface Finishes: Options include bright (RPG), matt (m), or intended for electroplating (UG). Mechanical Properties: Specifies tensile strength ranges, such as 290–450 N/mm² for St 2 K32. 🔩 Common Industry Application: Tee Nuts While the core standard focuses on steel strip, the designation DIN 1624 is most commonly searched for in relation to 4-prong Tee Nuts (also called impact nuts or wood insert nuts) manufactured from this steel. Design: Features a flange with 3 or 4 prongs that embed into soft materials like wood to prevent rotation. Common Sizes: Available in metric threads from M3 to M20 . Usage: Ideal for furniture, toys, and office equipment where a flush-mounted internal thread is needed. 📄 How to Access the PDF The full-text DIN 1624 standard is a copyrighted document and is often withdrawn or replaced by newer EN ISO standards in professional contexts. Go to product viewer dialog for this item. M3 M4 M5 M6 M8 M10 Carbon Steel Impact Nuts Captive T-Nuts 4 Claws, DIN 1624 | Galvanized | Flat | Metric | China
The DIN 1624 standard specifies the requirements for tee nuts with four prongs , a common type of fastener used primarily in woodworking and furniture manufacturing. These components allow a machine screw or bolt to be threaded into wood, providing a strong, permanent metal thread in a soft substrate. 1. Scope and Application The DIN 1624 standard defines the dimensions, materials, and technical delivery conditions for pronged tee nuts. These nuts are designed to be hammered or pressed into a pre-drilled hole. The four prongs bite into the wood, preventing the nut from turning or falling out when the bolt is tightened. Primary Use Cases: Flat-pack furniture, cabinetry, climbing wall holds, and speaker construction. Substrates: Softwood, hardwood, plywood, and particleboard. 2. Dimensional Specifications The standard covers a range of sizes, typically from M3 to M10 (though some manufacturers extend this range). Key dimensions specified in the DIN 1624 include: Thread Diameter ( ): The internal metric thread size. Flange Diameter ( ): The wide base that prevents the nut from being pulled through the wood. Sleeve Height ( ): The length of the threaded barrel. Sleeve Diameter ( ): The outer diameter of the barrel, which dictates the drill bit size needed for installation. 3. Material and Finish According to the standard, these fasteners are generally manufactured from materials that allow for the forming of the prongs without cracking. Materials: Typically steel (carbon steel) or stainless steel (A2 or A4) for corrosion resistance. Surface Treatment: Common finishes include: Zinc Plated (Galvanized): Provides standard corrosion protection (clear or yellow chromate). Plain/Oiled: Uncoated steel for applications where finish is irrelevant or the part will be painted. 4. Technical Requirements The DIN 1624 ensures that the hardware meets specific mechanical thresholds: Thread Accuracy: Must comply with ISO metric thread standards (typically 6H tolerance). Prong Integrity: The prongs must be sharp and rigid enough to penetrate wood fibers without bending prematurely. Load Bearing: While the wood usually fails before the metal nut, the flange must be thick enough to resist "pull-through" forces under high torque. 5. Installation Process The standard implicitly supports a three-step installation logic: Drilling: A hole is drilled with a diameter slightly larger than the sleeve diameter ( Insertion: The tee nut is placed into the hole from the opposite side of the bolt entry. Seating: The nut is driven in with a hammer or pulled into place using a bolt and washer, seating the prongs flush with the surface. Summary Table: Common DIN 1624 Dimensions (Approximate) Flange Ø ( Sleeve Height ( Drill Hole Ø M5 M6 M8 M10 To help you further, Compare DIN 1624 with ISO or ANSI equivalents ? Get advice on drill bit sizes for specific wood types?
Review: "DIN 1624 Standard PDF" Summary
What it is: DIN 1624 is a German industry standard (Deutsches Institut für Normung) that covers requirements and test methods for corrosion protection of metallic coatings on building components (note: this summarizes typical DIN scope; confirm exact title in the PDF). Format reviewed: PDF of the standard (assumed official or reproduced copy). din 1624 standard pdf
Key strengths
Technical clarity: The PDF presents test procedures, material specifications, and acceptance criteria in a structured, normative format—useful for engineers, fabricators, and quality inspectors. Actionable test methods: Includes step-by-step test descriptions (e.g., salt spray, adhesion, visual inspection) that can be followed in a lab or field verification. Standards terminology: Uses standardized definitions which aid consistency across projects and suppliers. Figures and tables: Diagrams and tables summarize classification systems and required tolerances, speeding up reference checks. Traceability: References to related DIN/EN standards help place requirements in a broader regulatory and product-compliance context.
Common weaknesses / caveats
Accessibility: Official DIN PDFs may be paywalled; freely available copies can be incomplete or unofficial—verify provenance and revision date. Language: Original text is typically in German; translations may be imperfect. If your project requires legal or contractual reliance, use the official language version or an accredited translation. Context dependence: The standard specifies test conditions and acceptance criteria but not project-specific performance targets—users must adapt it to local climate, exposure class, or client requirements. Updates: Standards are periodically revised; check the document date and confirm you have the latest edition. Practical detail: While normative, some real-world variables (surface prep variability, contractor workmanship) still require supplemental QA procedures.
Who should use it
Structural/architectural engineers specifying coatings for metal building parts. Fabricators and galvanizers needing to confirm compliance. QA/test labs performing corrosion and coating tests. Procurement or contract teams referencing technical acceptance criteria. The DIN 1624 standard primarily covers the technical
Quick practical guidance
Verify the PDF’s edition and source—use official DIN/standards body copies for contractual use. If working in an English-speaking project, obtain an accredited translation or have a technical translator review critical clauses. Cross-reference related standards cited in DIN 1624 for coating systems, surface preparation, and testing methods. Convert laboratory acceptance criteria into site-specific QA checklists (inspection stages, pass/fail tolerances, sampling frequency). Keep a revision log: record version/date used in specifications and any deviations approved for a project.