Hex chamfered single face
Round head
Countersunk head
Raised countersunk head
Cheese
Hex with collar
Round head with collar
Undercut countersunk head
Raised Undercut countersunk head
Low cheese head
Raised cheese
Hex chamfered double faces
GB/T 6560-2014
Cross recessed pan head thread rolling screws-type H
GB/T 6561-2014
Cross recessed countersunk head thread rolling screws-type H
GB/T 6562-2014
Cross recessed raised countersunk head thread rolling screws-type H
GB/T 6560-1986
Cross recessed pan head thread forming screws
GB/T 6561-1986
Cross recessed countersunk head thread forming screws-type H
GB/T 6562-1986
Cross recessed raised countersunk head thread forming screws-type H
