DIN 608-2010
Flat countersunk head square neck bolts with long square
DIN 608-1981
Flat countersunk square neck bolts with short square
BS 4933-10-1973
90° Countersunk square bolts
BS 4933-11-1973
120° Countersunk square bolts
BS 4933-10-2010
90° Countersunk square bolts
BS 4933-10-2015
90° Countersunk square bolts
BS 4933-11-2010
120° Countersunk square bolts
BS 4933-11-2015
120° Countersunk square bolts
CNS 4418-1981
Countersunk square bolts with long square
GOST 7786-1981
90° Flat countersunk head square neck bolts
GOST 17673-1981
120° Countersunk square bolts