European Standard Washer

The European Standard Washer (EN 14399-compliant) is a high-performance fastening component designed for industrial and automotive applications. It ensures load distribution, vibration resistance, and joint stability while complying with EU mechanical engineering standards. Made from high-grade stainless steel, the washer combines durability, corrosion resistance, and precision performance for critical bolted joints in machinery, vehicles, and offshore structures.

Application

The washer is suitable for construction machinery, automotive suspension systems, wind turbine bolted joints, railway fasteners, and CNC equipment alignment. Its high-strength design and corrosion resistance make it ideal for both industrial and offshore environments.

Standards

EN 14399-3: High-strength structural bolting assemblies
EN 1090-2: Structural steel components
ISO 9001:2015: Quality management systems
EN ISO 9227: Salt spray corrosion testing
DIN 51350: Friction coefficient testing
ISO 7412: Hexagon socket head cap screws
REACH SVHC: Chemical safety compliance
RoHS 2.0: Restriction of hazardous substances

Feature

(1) Multi-layer design with flange plate for stress distribution and spring washer for vibration resistance.
(2) High fatigue strength, capable of 5×10⁶ cycles (EN 13001-3).
(3) Wide temperature resistance from -40°C to +300°C.
(4) Optimized friction coefficient of 0.08–0.12 for secure fastening.
(5) Corrosion-resistant stainless steel (AISI 304/316) with passivated + PTFE coating.
(6) Compliant with EN 14399-3 and ISO 7412 for high-strength bolted connections.
(7) Compact and precise dimensions for consistent assembly performance.

Technical Specifications

Accessories

Included: Standard flange and spring washer set for assembly.
Optional: Custom washers for specialized applications or larger dimensions.

Installation / Maintenance

(1) Use a calibrated torque wrench according to VDI 2230 guidelines.
(2) Clean threads with brake cleaner before assembly.
(3) Avoid cross-threading during installation.
(4) Inspect every 500 operating hours for visible deformation (>0.2 mm).
(5) Replace washers showing signs of fatigue or corrosion.
(6) Store in a dry, corrosion-free environment to maintain performance.