Curved spring lock washers
BN 769
DIN 128 A
(Standard withdrawn)
~UNI 8839 A
~ČSN 021731
| Material | 
                               
            Material
            Spring steel
 
     | 
                    
| Surface | 
                               
            Surface
            mechanical zinc plated blue
 
     | 
                    
All features
M2,3; M33: not included in DIN 128
Standard
                        DIN 128 A (Standard withdrawn)
~UNI 8839 A
~ČSN 021731
                    Features
| Material | 
                               
            Material
            Spring steel
 
     | 
                    
| Surface | 
                               
            Surface
            mechanical zinc plated blue
 
     |