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DIN 127 Galvanized & Blackened Spring Washers - Quality China Suppliers & Factory
📌 DIN 127 Spring Washer Dimensions — Nominal Diameter: M2 to M14 (mm)
| 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 | |
📌 DIN 127 Spring Washer Dimensions — Nominal Diameter: M16 to M48 (mm)
| 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 | ||
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Key Functions of Spring Washers
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Prevent Looseness Spring washers provide an additional tightening force to help prevent the loosening of bolts or nuts due to vibration or other factors.
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Reduce Vibration Spring washers reduce vibration in mechanical devices, reduce the impact on connecting parts, and protect parts from damage.
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Disperse Pressure Spring washers have a certain degree of elasticity, which can disperse the tightening force of the pressure and help protect the connecting parts.
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Adjust Tightening Force The spring washer can also be used to adjust the tightening force, ensuring that the connecting parts receive 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 used for?
A DIN 127 spring washer is primarily used to prevent bolts and nuts from loosening under vibration or dynamic loads. It provides additional clamping force and helps maintain the integrity of mechanical connections in a wide range of industrial applications.
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What materials are DIN 127 spring washers available in?
DIN 127 spring washers are most commonly manufactured in carbon steel, stainless steel (A2/A4), and spring steel. The material selection depends on the application environment, load requirements, and corrosion resistance needs.
Q
What nominal diameter sizes are available for DIN 127 spring washers?
DIN 127 spring washers are available in a wide range of nominal diameters, from M2 up to M48. Sizes in parentheses (such as M18, M22, M27) are non-preferred sizes and may be available upon special request.
Q
How does a spring washer reduce vibration in mechanical assemblies?
The helical split design of a spring washer creates a spring-like tension between the bolt head and the mating surface. This elastic force absorbs shock and vibration, reducing the risk of fastener loosening and protecting connected components from wear and fatigue.
Q
Can DIN 127 spring washers be reused after disassembly?
It is generally not recommended to reuse spring washers after disassembly. Once a spring washer has been compressed and loaded, its elastic properties may be reduced. For critical applications, always install new spring washers to ensure reliable clamping performance.
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What is the difference between the "h" and "H" dimensions in the DIN 127 specification table?
In the DIN 127 specification table, "h" refers to the thickness (height) of the washer in its free (uncompressed) state, while "H" refers to the overall height of the spring washer when measured across the open gap — representing the spring's working range. Both values have minimum and maximum tolerances to ensure consistent performance.