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China DIN 127 Galvanized & Blackened Spring Washer Factory - Quality Suppliers for Your Mechanical Needs
📐 Dimensions Table — 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 | |
📐 Dimensions Table — 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.
💡 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
Q What is a DIN 127 spring washer?
A DIN 127 spring washer is a split, helical washer manufactured to the German DIN 127 standard. It is designed to provide a spring force under a bolt or nut head to prevent loosening caused by vibration, shock, or thermal expansion in mechanical assemblies.
Q What materials are DIN 127 spring washers available in?
DIN 127 spring washers are commonly available in carbon steel (with or without surface treatment), stainless steel (A2 and A4 grades), and other alloy materials. The material choice depends on the application environment, including resistance to corrosion, temperature, and load requirements.
Q What size range does DIN 127 cover?
DIN 127 spring washers are available in a wide range of nominal diameters, from M2 up to M48, making them suitable for both small precision assemblies and heavy-duty industrial applications.
Q How does a spring washer prevent bolt loosening?
The split, helical design of a spring washer creates a spring tension between the bolt head (or nut) and the mating surface. This tension maintains a constant clamping force even when vibration or movement occurs, effectively resisting the rotational loosening of the fastener.
Q What industries commonly use DIN 127 spring washers?
DIN 127 spring washers are widely used across automotive, machinery manufacturing, construction, electronics, rail transportation, and general industrial assembly — wherever secure, vibration-resistant fastening is required.
Q How do I select the correct spring washer size?
Select the spring washer based on the nominal diameter of the bolt or screw being used. For example, for an M8 bolt, choose a spring washer with a nominal diameter of 8. Refer to the dimension tables above for the corresponding inner diameter (d), height (h), and total height (H) values to ensure proper fit and performance.