Serrated lock washers internal and external serrations
BN 783
| Brandtype | 
            Brandtype
            DD
 | 
| Material | 
            Material
            Spring steel
 | 
| Surface | 
            Surface
            zinc plated blue
 | 
| Hardness | 
            Hardness
            430-510 HV
 | 
All features
Features
| Brandtype | 
            Brandtype
            DD
 | 
| Material | 
            Material
            Spring steel
 | 
| Surface | 
            Surface
            zinc plated blue
 | 
| Hardness | 
            Hardness
            430-510 HV
 | 
Warnings
ISO 4042
Quenched and tempered fasteners ≥ 360 HV and tempered case-hardened fasteners with electroplated coatings: Susceptible to hydrogen embrittlement!
Further notice to residual risks can be found on our web page: Notes on use