Round head
Countersunk head
Raised countersunk head
Undercut countersunk head
Raised Undercut countersunk head
Raised cheese
IFI 513-7-1982
Pan head screws with square socket-Table 7
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
ASME/ANSI B18.6.7M-13-1999
Metric pan head screws with square socket-Table 13
ASME/ANSI B18.6.7M-13-2005
Metric pan head screws with square socket-Table 13
ASME/ANSI B18.6.7M-13-2010
Metric pan head screws with square socket-Table 13
