T-head
Cheese with collar
T-head with square neck
T-head with shoulder
Tommy
Flat T-head
T-head with nibs
T-head countersunk
Hole on shank
Normal shank
Shoulder
Waisted shank
Full thread
Dog point
Semitubular end
DIN 787-2005
T-head bolts--type A( a≤d )
T-head bolts--type B( a≤d )
T-head bolts--Type B( a>d )