Slot
Countersunk head
Raised countersunk head
Countersunk head square neck
Countersunk head with nib
Square countersunk head
Countersunk Cheese head
T-head countersunk
Reduced shank
Normal shank
Full thread
Semitubular end
BS 4933-8-1973
90° Countersunk head bolts
BS 4933-8-2010
BS 4933-8-2015