Round head
Countersunk head
Raised countersunk head
Round head with collar
Undercut countersunk head
Raised Undercut countersunk head
Low cheese head
Raised cheese
UNI 7688-1977
Cross recessed countersunk head screws with type H
UNI 7687
Pan head screws with type H cross recess
UNI 7689
Countersunk raised head screws with type H cross recess
