DIN25201 Stainless Steel Double Fold Self-locking Washer Supplier In China
Ningbo Teng Qi Fasteners Co., Ltd. is a reliable supplier of DIN25201 Stainless Steel Double Fold Self-Locking Washers, specializing in the manufacturing of high-performance fastening solutions for applications requiring superior anti-loosening performance. With professional stamping technology and advanced production equipment, we are able to produce washers with precise dimensions, consistent locking angles, and stable mechanical properties. Our strict quality control system covers material inspection, production processes, and finished product testing to ensure every washer meets DIN25201 requirements and provides dependable performance in demanding environments.
Different from conventional spring washers, our DIN25201 Double Fold Self-Locking Washers utilize a wedge-locking design to provide stronger resistance against vibration and dynamic loads without relying on friction alone. We use high-quality stainless steel materials such as SUS304 and SUS316 to achieve excellent corrosion resistance and long service life. With flexible production capabilities, we can support standard sizes as well as customized requirements for materials, dimensions, packaging, and inspection. Our products are widely trusted by customers in industries such as automotive, machinery, construction, renewable energy, railway, and heavy equipment manufacturing.
Specification:
DIN25201 Stainless Steel Double Fold Self-Locking Washers are designed according to the DIN25201 standard and feature a unique double-fold wedge locking structure that provides excellent resistance against bolt loosening caused by vibration and dynamic loads. The washers are installed in pairs with the cams facing each other, creating a reliable locking effect by utilizing the tension force of the bolted joint. Manufactured from high-quality stainless steel materials such as SUS304 and SUS316, these washers offer excellent corrosion resistance, durability, and stable mechanical performance even in harsh environments.
| Product name | DIN25201 Stainless Steel Double Fold Self-Locking Washers |
|---|---|
| Inner Diamter: | Φ3-Φ80 |
| Material: | SS304 SS316 |
| Surface Treatment | Bright Pickling |
| Packaging: | Boxes/cartons into wooden pallets |
Dimension Chart of DIN25201 Stainless Steel Double Fold Self-locking Washer:
The dimension chart of DIN25201 Stainless Steel Double Fold Self-Locking Washers provides detailed specifications, including inner diameter, outer diameter, thickness, washer height, and applicable bolt sizes according to the DIN25201 standard. These precise dimensional requirements ensure proper compatibility with matching bolts and nuts, allowing the double-fold locking structure to function effectively in preventing loosening caused by vibration and dynamic loads. The standardized dimensions also help customers select the correct washer size for different fastening applications.
| Mon | Φ3 | Φ3.5 | Φ4 | Φ5 | Φ6 | Φ8 | Φ10 | Φ12 | Φ14 | Φ16 | Φ18 | Φ20 | Φ22 | Φ24 | Φ27 | Φ30 |
| d max | 3.5 | 4 | 4.5 | 5.5 | 6.6 | 8.8 | 10.9 | 13.2 | 15.4 | 17.2 | 19.7 | 21.6 | 23.6 | 25.5 | 28.6 | 31.6 |
| d min | 3.3 | 3.8 | 4.3 | 5.3 | 6.3 | 8.6 | 10.5 | 12.8 | 15 | 16.8 | 19.3 | 21.2 | 23.2 | 25.1 | 28.2 | 31.2 |
| dc max | 7.2 | 7.8 | 7.8 | 9.2 | 11 | 13.7 | 16.8 | 19.7 | 23.2 | 25.6 | 29.2 | 30.9 | 34.7 | 39.2 | 42.3 | 47.3 |
| dc min | 6.8 | 7.4 | 7.4 | 8.8 | 10.6 | 13.3 | 16.3 | 19.3 | 22.8 | 25.2 | 28.8 | 30.5 | 34.3 | 38.8 | 41.7 | 46.7 |
| H max | 2.05 | 2.05 | 2.05 | 2.05 | 2.05 | 2.75 | 2.75 | 2.75 | 3.65 | 3.65 | 3.65 | 3.65 | 3.65 | 3.65 | 6.05 | 6.05 |
| H min | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | 2.25 | 2.25 | 2.25 | 3.15 | 3.15 | 3.15 | 3.15 | 3.15 | 3.15 | 5.55 | 5.55 |
| Mon | Φ27 | Φ30 | Φ33 | Φ36 | Φ39 | Φ42 | Φ45 | Φ48 | Φ52 | Φ56 | Φ60 | Φ64 | Φ68 | Φ70 | Φ76 | Φ80 |
| d max | 28.6 | 31.6 | 34.6 | 37.6 | 40.6 | 43.5 | 46.7 | 50.1 | 54.1 | 59.6 | 63.6 | 67.6 | 71.6 | 75.6 | 79.6 | 83.6 |
| d min | 28.2 | 31.2 | 34.2 | 37.2 | 40.2 | 43 | 46.2 | 49.6 | 53.6 | 59.1 | 63.1 | 67.1 | 71.1 | 75.1 | 79.1 | 83.1 |
| dc max | 42.3 | 47.3 | 48.8 | 55.3 | 58.8 | 63.3 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 |
| dc min | 41.7 | 46.7 | 48.2 | 54.7 | 58.2 | 62.7 | 68 | 73 | 78 | 83 | 88 | 93 | 98 | 103 | 108 | 113 |
| H max | 6.05 | 6.05 | 6.05 | 6.05 | 6.05 | 6.05 | 7.75 | 7.75 | 7.75 | 7.75 | 7.75 | 7.75 | 10.25 | 10.25 | 10.25 | 10.25 |
| H min | 5.55 | 5.55 | 5.55 | 5.55 | 5.55 | 5.55 | 6.25 | 6.25 | 6.25 | 6.25 | 6.25 | 6.25 | 8.75 | 8.75 | 8.75 | 8.75 |
- RELATED WASHER LISTS:
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- DIN127 Spring Lock Washer
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- ASME/ANSI B 18.21.1 (USS) Flat Washer
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- DIN6797A Stainless Steel External Teeth Lock Washers
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Application of DIN25201 Stainless Steel Double Fold Self-locking Washer:
With its unique double-fold wedge locking structure, DIN25201 Stainless Steel Double Fold Self-Locking Washers provide reliable anti-loosening performance by converting bolt tension into a continuous locking force. Compared with traditional spring washers, this design offers better stability under severe vibration, impact, and dynamic loading conditions, making it suitable for safety-critical fastening applications.
| Application | Details |
|---|---|
| Automotive Industry | Used in engines, chassis systems, suspension components, steering systems, and vehicle assemblies where fasteners are exposed to continuous vibration and dynamic loads. |
| Machinery and Equipment Manufacturing | Applied in industrial machines, automation equipment, motors, pumps, compressors, and heavy machinery to prevent bolt loosening during long-term operation. |
| Wind Power Industry | Used in wind turbines, tower structures, blade connection systems, and other critical fastening points where safety and reliability are essential under strong vibration and changing loads. |
| Railway Industry | Applied in railway equipment, tracks, rolling stock, and infrastructure components requiring secure fastening under repeated impact and vibration conditions |
| Construction and Steel Structures | Used in bridges, steel frameworks, building equipment, and structural assemblies where reliable locking performance is needed for safety-critical connections. |
| Renewable Energy Industry | Suitable for solar mounting systems, energy storage equipment, and outdoor power facilities requiring corrosion-resistant and maintenance-friendly fastening solutions. |
| Marine and Offshore Industry | Used in ships, offshore platforms, and coastal equipment due to the excellent corrosion resistance of stainless steel materials in humid and harsh environments. |
| Agricultural Machinery Industry | Applied in tractors, harvesting machines, and agricultural equipment where fasteners must withstand vibration, dust, and outdoor working conditions. |