DIN478 square head bolt with collar

DIN 478 

*All measurements in millimeters (mm)* 

d e s b k d1
M8 10 8 22 10 13.5
M10 13 10 26 13 16.5
M12 17 13 30 15 19.5
M16 21 16 38 20 25

 All information is strictly informative