Round head
Countersunk head
Raised countersunk head
Undercut countersunk head
Raised Undercut countersunk head
Raised cheese
IFI 513-3-1982
Metric square socket countersunk flat head screws-Table 3
IFI 513-5-1982
Square socket countersunk flat head screws-Table 5
IFI 513-7-1982
Pan head screws with square socket-Table 7
