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DIN 1587

DIN 1587 is a standard from the German Institute for Standardization (DIN) for cap nuts (also called dome nuts). This standard specifies the dimensions, tolerances, and mechanical characteristics of cap nuts used in various mechanical and structural applications. DIN 1587 cap nuts come in different sizes and materials to accommodate diverse needs.

Characteristics and Dimensions

  • Available in thread sizes from M3 to M24

  • Hexagonal shape with a dome-shaped cap covering the end of the bolt or screw

  • The cap protects the screw end from corrosion and mechanical damage, and provides an aesthetic finish

Materials and Surface Treatments
Common materials include:

Typical surface treatments:

  • Zinc plating

  • Chrome plating

  • Nickel plating

Applications

  • Mechanical engineering: Securing bolted joints and protecting fastener ends

  • Automotive industry: Securing and covering bolts in vehicles

  • Construction: Fastening structural connections in buildings and frameworks

  • Furniture manufacturing: Attaching and covering screws in furniture and decorative items

Installation and Use
Choosing the correct size and material is essential for optimal performance and durability. Cap nuts should be tightened with a suitable wrench or ratchet to ensure proper torque.

Conclusion
DIN 1587 cap nuts are essential fasteners in numerous mechanical and structural applications. Their standardized dimensions and materials offer reliable and secure connections, protect bolt ends, and provide an aesthetically pleasing finish.

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