Round head
Countersunk head
Raised countersunk head
Cheese
Round head with collar
Low cheese head
Raised cheese
ASME/ANSI B18.6.3-8-2013
6-Lobe 80° oval head screws-Table 8
ASME/ANSI B18.6.3-19-2013
6-Lobe pan head screws-Table 19
ASME/ANSI B18.6.3-22-2013
6-Lobe cheese head screws-Table 22
ASME/ANSI B18.6.3-25-2013
6-Lobe truss head screws-Table 25
ASME/ANSI B18.6.3-39-2013
6-Lobe socke round head collar screws-Table 39