Washer PP10 E90 /100pcs/ 650544

Steel washer for system connections

This steel washer with an outer diameter of 20 mm and an inner diameter of 10 mm is designed for connecting elements in various structural systems. Made of steel and protected with galvanized coating, it ensures corrosion resistance and connection durability. Its round hole is ideal for metric screws size 10.

Application and functionality

The PP10 E90 washer meets the requirements of the E90 functionality maintenance system according to DIN 4102-12. This means it provides at least 90 minutes of functional maintenance of key devices in the building during a fire. It is particularly important for:

• Fire alarm devices
• Fire alarm systems
• Emergency lighting
• Sprinkler systems

Therefore, the PP10 E90 washer plays an important role in ensuring fire safety in buildings.

Materials and finish

The washer is standardly supplied with galvanized coating. Custom-made options with other surface protection methods are also available:

• FP: Zinc flake coating (PN-EN ISO 10683:2018-11) – provides high corrosion resistance.
• F: Hot-dip galvanized steel (PN-EN ISO 1461:2023-02) – durable corrosion protection, especially in harsh atmospheric conditions.
• E: Stainless steel – ideal for applications requiring the highest corrosion resistance and hygiene.

The washer complies with the size according to DIN 125.