Round head square neck bolts with hex nut
BN 248
DIN 603 Mu
~UNI 5732
~ČSN 021319
| Headform | 
            Headform
            Round with square neck
 | 
| Thread | 
            Thread
            partially threaded
 | 
| Material | 
            Material
            Steel
 | 
| Property class | 
            Property class
            4.6 / 4.8 (At manufacturer's option)
 | 
| Surface | 
            Surface
            zinc plated blue
 | 
All features
1)At manufacturer's option
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 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 46120 - DIN 603
Round head square neck bolts without hex nuts - Steel - 8.8 - zinc plated blue
BN 645 - DIN 603
Round head square neck bolts without hex nuts - Stainless steel - A2