Round head
Countersunk head
Raised countersunk head
Cheese
Round head with collar
Undercut countersunk head
Raised Undercut countersunk head
Low cheese head
Raised cheese
Cheese with hole
Countersunk Cheese head
Large cheese head
IFI 513-2-1982
Slotted countersunk flat head screws-Table 8
QJ 2370-1992
Slotted countersunk head screws
ASME/ANSI B18.6.7M-2-1999
Metric slotted flat head screws-Table 2
ASME/ANSI B18.6.7M-2-2005
Metric slotted flat head screws-Table 2
ASME/ANSI B18.6.7M-2-2010
Metric slotted flat head screws-Table 2
