Detalles del producto

These specialized screws are engineered for maximum durability, strength, and a clean aesthetic.

• DIN 7991 Countersunk Head: The screw features a flat-topped, conical head (typically 90 degrees) designed to fit into a countersunk hole. This allows the head to sit completely flush with or below the surface of the workpiece, creating a smooth, professional finish that prevents interference with moving parts or other components.
• Internal Hex Socket (Allen) Drive: The head is equipped with an internal hexagonal recess, allowing for high-torque installation with a standard hex key (Allen wrench). This secure drive system minimizes the risk of cam-out and protects the drive from external damage, maintaining the screw’s clean appearance.
• High-Strength Carbon Steel: Manufactured from high-quality carbon steel, these bolts are available in various property classes to meet demanding strength requirements:
  • Grade 8.8: High-tensile steel suitable for most industrial, automotive, and structural applications.
  • Grade 10.9 & 12.9: Very high-strength steels for critical, high-stress assemblies requiring maximum clamping force and load-bearing capacity.
• Recubrimiento Dacromet avanzado: The key feature of these bolts is the Dacromet coating. This is a non-electrolytic, water-based coating comprised of zinc and aluminum flakes in a chromate binder. Its benefits are significant:
  • Resistencia superior a la corrosión: Offers exceptional protection against rust, withstanding hundreds of hours of salt spray testing—far exceeding standard zinc plating.
  • Sin fragilización por hidrógeno: Because the coating is applied without electrolysis, there is no risk of hydrogen embrittlement, which is a critical concern for high-strength fasteners.
  • Heat and Chemical Resistance: Maintains its protective properties at elevated temperatures and is resistant to many industrial solvents and chemicals.
  • Thin, Uniform Layer: The coating provides excellent coverage without altering thread dimensions, ensuring a consistent fit.

Parámetros del producto

The technical specifications for our DIN 7991 Dacromet Coated Hex Socket Countersunk Head Cap Screws are detailed below.

Características del producto

These high-performance screws are engineered to deliver uncompromising performance in the most challenging conditions:

• Exceptional Corrosion Protection: The Dacromet coating provides a robust barrier against rust and environmental corrosion, making it ideal for outdoor, marine, and industrial use.
• Perfect Flush-Mount Finish: The countersunk head design ensures a smooth, non-protruding surface, enhancing both safety and aesthetics.
• High Tensile Strength: Made from high-grade carbon steel (8.8, 10.9, 12.9), these bolts provide the strength needed for critical, load-bearing joints.
• Elimina el riesgo de fragilización por hidrógeno: The non-electrolytic application process makes these screws a safe and reliable choice for high-strength fastening.
• Secure High-Torque Installation: The internal hex drive allows for reliable and controlled tightening to achieve optimal clamping force.
• Excellent Heat and Chemical Resistance: The coating performs reliably in high-temperature environments and is resistant to automotive fluids and industrial chemicals.

Aplicaciones de los productos

The unique combination of a flush-mount design and superior protective coating makes these screws indispensable for a wide range of demanding industries:

• Sector del automóvil: Ideal for fastening components in engine bays, brake systems, chassis, and underbody parts where resistance to heat, salt, and fluids is critical.
• Marine Equipment: Used in boat and ship construction for securing hardware and fittings exposed to saltwater and harsh marine environments.
• Aerospace and Defense: Suitable for assembling precision components where strength, reliability, and a flush profile are required.
• Wind and Solar Energy: Used in the assembly of wind turbines and solar panel mountings that are constantly exposed to the elements.
• Construcción e infraestructuras: Perfect for architectural metalwork, bridges, and other structures requiring long-term durability and corrosion resistance.
• Heavy Machinery: Provides a secure and lasting fastening solution for agricultural, mining, and manufacturing equipment.