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China DIN 127 Galvanized and Blackened Spring Washer Factory - Reliable Suppliers for Mechanical Applications
📐 Dimensional Data — Nominal Diameter M2 to M14
| Nominal diameter | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | -14 | |
| d | Min | 2.1 | 2.6 | 3.1 | 4.1 | 5.1 | 6.2 | 8.2 | 10.2 | 12.3 | 14.3 |
| Max | 2.3 | 2.8 | 3.3 | 4.4 | 5.4 | 6.7 | 8.7 | 10.7 | 12.8 | 14.9 | |
| h | Public | 0.6 | 0.8 | 1 | 1.2 | 1.6 | 2 | 2.5 | 3 | 3.5 | 4 |
| Min | 0.52 | 0.7 | 0.9 | 1.1 | 1.5 | 1.9 | 2.35 | 2.85 | 3.3 | 3.8 | |
| Max | 0.68 | 0.9 | 1.1 | 1.3 | 1.7 | 2.1 | 2.65 | 3.15 | 3.7 | 4.2 | |
| n | Min | 0.52 | 0.7 | 0.9 | 1.1 | 1.5 | 1.9 | 2.35 | 2.85 | 3.3 | 3.8 |
| Max | 0.68 | 0.9 | 1.1 | 1.3 | 1.7 | 2.1 | 2.65 | 3.15 | 3.7 | 4.2 | |
| H | Min | 1.2 | 1.6 | 2 | 2.4 | 3.2 | 4 | 5 | 6 | 7 | 8 |
| Max | 1.5 | 2.1 | 2.6 | 3 | 4 | 5 | 6.5 | 8 | 9 | 10.5 | |
| 1,000-piece weight (steel)≈ kg | 0.023 | 0.053 | 0.097 | 0.182 | 0.406 | 0.745 | 1.53 | 2.82 | 4.63 | 6.85 | |
📐 Dimensional Data — Nominal Diameter M16 to M48
| Nominal diameter | 16 | （18） | 20 | （22） | 24 | （27） | 30 | 36 | 42 | 48 | |
| d | Min | 16.3 | 18.3 | 20.5 | 22.5 | 24.5 | 27.5 | 30.5 | 36.6 | 42.6 | 49 |
| Max | 16.9 | 19.1 | 21.3 | 23.3 | 25.5 | 28.5 | 31.5 | 37.8 | 43.8 | 50.2 | |
| h | Public | 4 | 4.5 | 5 | 5 | 6 | 6 | 6.5 | 7 | 8 | 9 |
| Min | 3.8 | 4.3 | 4.8 | 4.8 | 5.8 | 5.8 | 6.2 | 6.7 | 7.7 | 8.7 | |
| Max | 4.2 | 4.7 | 5.2 | 5.2 | 6.2 | 6.2 | 6.8 | 7.3 | 8.3 | 9.3 | |
| n | Min | 3.8 | 4.3 | 4.8 | 4.8 | 5.8 | 5.8 | 6.2 | 6.7 | 7.7 | 8.7 |
| Max | 4.2 | 4.7 | 5.2 | 5.2 | 6.2 | 6.2 | 6.8 | 7.3 | 8.3 | 9.3 | |
| H | Min | 8 | 9 | 10 | 10 | 12 | 12 | 13 | 14 | 16 | 18 |
| Max | 10.5 | 11.5 | 13 | 13 | 15 | 15 | 17 | 18 | 21 | 23 | |
| Nominal diameter | 7.75 | 11 | 15.2 | 16.5 | 26.2 | 28.2 | 37.6 | 51.8 | 78.7 | ||
🔩 Key Functions of Spring Washers
- 🔒 Prevent Looseness: Spring washers provide an additional tightening force to help prevent the loosening of bolts or nuts due to vibration or other factors.
- 📳 Reduce Vibration: Spring washers reduce vibration in mechanical devices, reduce the impact on connecting parts, to protect parts from damage.
- ⚖️ Disperse Pressure: Spring washers have a certain degree of elasticity, can disperse the tightening force of the pressure, help to protect the connecting parts.
- 🎯 Adjust Tightening Force: The spring washer can also be used to adjust the tightening force, to ensure that the connecting parts get the appropriate pressure.
- 🛡️ Overall Reliability: In general, spring washers play an important role in a variety of mechanical devices to help ensure the safety and reliability of connecting parts.
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Frequently Asked Questions
❓ What is a DIN 127 spring washer?
A DIN 127 spring washer is a helical split-ring lock washer manufactured according to the German DIN 127 standard. Its spring-like shape generates a continuous clamping force that helps maintain bolt tension and resists loosening caused by vibration or dynamic loads.
❓ What size range do DIN 127 spring washers cover?
DIN 127 spring washers are available in nominal diameters from M2 up to M48, covering a broad range of bolt and nut sizes suitable for various industrial, automotive, and mechanical applications.
❓ What materials are DIN 127 spring washers made from?
DIN 127 spring washers are commonly produced in carbon steel, alloy spring steel, stainless steel (A2 / A4), and phosphor bronze. Material selection depends on load requirements, operating temperature, and the level of corrosion resistance needed.
❓ How do spring washers reduce vibration in mechanical assemblies?
The helical design stores elastic energy when compressed. This stored energy acts as a buffer that absorbs shock and vibration, reducing impact forces transmitted to the connected parts and helping to protect them from fatigue damage over time.
❓ Can DIN 127 spring washers be reused after disassembly?
While spring washers may be reused in low-load applications, it is generally recommended to replace them in critical assemblies. Repeated full compression can permanently set the washer, reducing its spring force and locking effectiveness.
❓ What is the difference between DIN 127 Type A and Type B?
DIN 127 Type A (normal) and Type B (heavy) differ in cross-section thickness and load capacity. Type B features a heavier cross-section that delivers greater spring force, making it the preferred choice for applications requiring higher clamping loads or more demanding vibration environments.