Slot
Cross recess
Hex socket
Square socket
Combo
6-Lobe
Pozidriv recess
Hex chamfered single face
Round head
Countersunk head
Raised countersunk head
Cheese
Hex with collar
Round head with collar
Undercut countersunk head
Raised Undercut countersunk head
Low cheese head
Raised cheese
Hex chamfered double faces
Straight-knurl
Reduced shank
Full thread
ASME/ANSI B18.6.3-37-2013
Type C pozi slotted combo round head self tapping screws-Table 37
Type C pozi slotted combo round head self tapping screws with fine thread-Table 37
Q 262-2012
Cross recessed pan head thread forming screws