Knurled nuts
BN 13431 - DIN 6303 B with pin hole
DIN 6303
~UNI 6006
| Material | 
            Material
            Free-cutting steel
 | 
| Surface | 
            Surface
            black-oxidized
 | 
| Version | 
            Version
            DIN 6303 B with pin hole
 | 
All features
Standard
                        DIN 6303
~UNI 6006
                    Features
| Material | 
            Material
            Free-cutting steel
 | 
| Surface | 
            Surface
            black-oxidized
 | 
| Version | 
            Version
            DIN 6303 B with pin hole
 |