Automatic European Standard Washer for Colorfastness and Shrinkage Testing
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Whats/App: +86 156 1874 6768
Web: standard-groups.com
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
| Parameter | Specifications |
|---|---|
| Material Grade | AISI 316L (ISO 3506) |
| Dimensions | M12–M30 (EN 14399-1) |
| Outer Diameter | 22–50 mm (±0.1 mm) |
| Thickness | 2.5–4.0 mm |
| Load Class | 10.9 / 12.9 (DIN 912) |
| Surface Treatment | Passivated + PTFE coating |
| Load Capacity | 120 kN (static), 45 kN (fatigue) |
| Corrosion Resistance | Salt spray ≥ 1000 h (EN ISO 9227) |
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.
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