Round head square neck bolts without hex nuts
BN 30401
DIN 603
~UNI 5732
~ČSN 021319
| Headform | 
                               
            Headform
            Round with square neck
 
     | 
                    
| Thread | 
                               
            Thread
            partially / fully threaded
 
     | 
                    
| Material | 
                               
            Material
            Steel
 
     | 
                    
| Property class | 
                               
            Property class
            4.6 / 4.8 (At manufacturer's option)
 
     | 
                    
| Surface | 
                               
            Surface
            zinc plated blue
 
     | 
                    
All features
b: the partially threaded version can not always be guaranteed
Standard
Additional information
At manufacturer's option, the diameter of the shaft may correspond with the pitch diameter
Features
| Headform | 
                               
            Headform
            Round with square neck
 
     | 
                    
| Thread | 
                               
            Thread
            partially / fully threaded
 
     | 
                    
| Material | 
                               
            Material
            Steel
 
     | 
                    
| Property class | 
                               
            Property class
            4.6 / 4.8 (At manufacturer's option)
 
     | 
                    
| Surface | 
                               
            Surface
            zinc plated blue
 
     | 
                    
BN 20147 - DIN 603 Mu
Round head square neck bolts with hex nut - Steel - 4.6 / 4.8 (At manufacturer's option) - hot dip galvanized
BN 248 - DIN 603 Mu
Round head square neck bolts with hex nut - Steel - 4.6 / 4.8 (At manufacturer's option) - zinc plated blue
BN 31107 - DIN 603
Round head square neck bolts without hex nuts - Stainless steel - A4
BN 645 - DIN 603
Round head square neck bolts without hex nuts - Stainless steel - A2