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| Washer Type | Core Features | Typical Applications |
| Flat Washer | Thin, smooth metal disk; basic load-distributing function | General fastening scenarios, protecting workpiece surfaces |
| Split Lock Washer | Helical split design; creates spring tension to resist loosening | Mechanical equipment subject to vibration (e.g., motors, pumps) |
| Serrated Lock Washer | Teeth on one/both sides; bite into fastener and workpiece for anti-slip | Automotive parts, heavy machinery, high-vibration environments |
| Wave Washer | Curved spring-like structure; provides constant preload | Precision instruments, bearing assemblies, small electronic devices |
| Rubber Sealing Washer | Non-metal material (rubber/nylon); waterproof and dustproof | Plumbing fixtures, outdoor equipment, hydraulic systems |
| Stainless Steel Washer | Corrosion-resistant; suitable for harsh environments | Marine equipment, coastal construction, food processing machinery |
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