Round head
Flat round head
Cheese
T-head
Cup head square neck
Cup head nib
Cup oval neck
Low cheese head
Hole on shank
Straight-knurl
Reduced shank
Normal shank
Full thread
Cone point
Dog point
Semitubular end
ASME/ANSI B18.2.6-2006
Twist-off type tension control structural bolts with round head