Serrated lock washers large type, internal serrations
BN 80063
NFE 25-512
| Brandtype | 
            Brandtype
            JZC
 | 
| Material | 
            Material
            Spring steel
 | 
| Surface | 
            Surface
            zinc plated with thick layer passivation
 | 
| Hardness | 
            Hardness
            420-510 HV
 | 
All features
Standard
                        NFE 25-512
                    Additional information
Used for slotted holes and especially, if the serration should be invisible, because of esthetic appeal.
Features
| Brandtype | 
            Brandtype
            JZC
 | 
| Material | 
            Material
            Spring steel
 | 
| Surface | 
            Surface
            zinc plated with thick layer passivation
 | 
| Hardness | 
            Hardness
            420-510 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