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Stainless Steel Spring Washers
DIN 7980 stainless steel spring washers are split, helical washers designed to provide resistance to loosening in bolted assemblies.
When compressed, the washer applies a spring force that helps maintain preload and counters vibration induced loosening.
Applicable Standard
DIN 7980 – Helical spring washers
Material
- A2 Stainless Steel (304)
- A4 Stainless Steel (316)
Sizes
M6–M30.
Specific Features
- Split (helical) spring washer profile
- Square or rectangular wire section, depending on size
- Metric dimensions as defined by DIN 7980
- Designed to fit standard metric bolts, screws, and nuts
Performance
- Provides resistance to loosening caused by vibration
- Maintains clamping force under dynamic loading
- Compatible with stainless bolts and nuts of matching grade
Typical Applications
- Vibration prone assemblies Mechanical and engineering fixings
- Threaded bar, bolt, and stud connections
- General construction and industrial installations
- External and corrosive environments when used with stainless fasteners
Dimensions & Design
Stainless Steel Sping Washers are defined by their outer diameter (OD) and internal diameter (ID) to DIN 7980.
DIN 7890 Spring Lock Washer for Cylinder Head Screws
| Product | Nominal | d1 - Max | d1 - Min | d2 - Max | d2 - Min | S - Limit | h - Max | h - Min | |
|---|---|---|---|---|---|---|---|---|---|
| M6 | 6 | 6.5 | 6.1 | 9.9 | 1.6 | ±0.1 | 3.78 | 3.2 | |
| M8 | 8 | 8.5 | 8.1 | 12.7 | 2 | ±0.1 | 4.72 | 4 | |
| M10 | 10 | 10.7 | 10.2 | 16 | 2.5 | ±0.15 | 5.9 | 5 | |
| M12 | 12 | 12.7 | 12.2 | 18 | 2.5 | ±0.15 | 5.9 | 5 | |
| M14 | 14 | 14.7 | 14.2 | 21.1 | 3 | ±0.2 | 7.1 | 6 | |
| M16 | 16 | 17 | 16.2 | 24.4 | 3.5 | ±0.2 | 8.25 | 7 | |
| M18 | 18 | 19 | 18.2 | 25.4 | 3.5 | ±0.2 | 8.25 | 7 | |
| M20 | 22 | 23.5 | 22.5 | 32.9 | 4.5 | ±0.2 | 10.6 | 9 | |
| M22 | 22 | 23.5 | 22.5 | 32.9 | 4.5 | ±0.2 | 10.6 | 9 | |
| M24 | 24 | 25.5 | 24.5 | 35.9 | 5 | ±0.2 | 11.8 | 10 | |
| M27 | 27 | 28.5 | 27.5 | 38.9 | 5 | ±0.2 | 11.8 | 10 | |
| M30 | 30 | 31.7 | 30.5 | 44.1 | 6 | ±0.2 | 14.2 | 12 |
View our Stainless Steel Spring Washers datasheet
(PDF, 978 KB)