Square socket
Round head
Countersunk head
Raised countersunk head
Undercut countersunk head
Raised Undercut countersunk head
Raised cheese
Normal shank
Full thread
ASME/ANSI B18.6.3-19-2013
Square socket pan head screws-Table 19
ASME/ANSI B18.6.3-25-2013
Square socket truss head screws-Table 25
ASME/ANSI B18.6.3-36-2013
Square socket round head screws-Table 36