Metric High Collar lock washers are specially designed for use with socket head cap screws and where there are space limitations
| Type | Lockwasher |
| Style | High Collar |
| Size | M20 |
| Material | Spring Steel |
| Design Usage | Tension |
| Din No. | 7980 |
| Inside Dia. | 20.1 mm |
| Outside Dia. | 30.6 mm |
| Thickness | 4.5 mm |
