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DIN 571

DIN 571 is a standard from the German Institute for Standardization (DIN) for hex-head wood screws, also known as lag screws or timber construction screws. It defines the dimensions, tolerances, and mechanical properties of wood screws used in various wood connections. Hex-head wood screws according to DIN 571 are available in different sizes and materials to meet varying needs.

Characteristics and Dimensions

  • Diameters from 4 mm to 20 mm, lengths from 20 mm to 400 mm

  • Hexagonal head suitable for wrench and ratchet use

  • Tapered shaft tip for easy insertion into wood

Materials and Surface Treatments
Common materials:

Application Areas

  • Timber construction: Securing wood structures and joints

  • Furniture making: Assembling furniture parts and wooden frames

  • Gardening: Fastening fences, pergolas, and outdoor structures

  • Construction: Securing wood connections in building projects

Installation and Use
Choose the correct size and material for durability. Tighten with a suitable wrench or ratchet for proper torque. Pre-drilling is usually not necessary but can be beneficial depending on wood type and thickness.

Conclusion
DIN 571 hex-head wood screws are essential fasteners in many wood and construction applications. Their standardized dimensions and materials ensure a reliable, safe connection for a wide range of uses.


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