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
ASME/ANSI B18.6.3-2-2013
Square slot 80° countersunk head screws-Table 2
ASME/ANSI B18.6.7M-5-1999
Metric square socket countersunk flat head screws-Table 5
ASME/ANSI B18.6.7M-5-2005
Metric square socket countersunk flat head screws-Table 5
ASME/ANSI B18.6.7M-5-2010
Metric square socket countersunk flat head screws-Table 5
