Round head
Countersunk head
Raised countersunk head
Cheese
Round head with collar
Undercut countersunk head
Raised Undercut countersunk head
Low cheese head
Raised cheese
Cheese with hole
Countersunk Cheese head
Large cheese head
GB/T 67-2016
Slotted pan head screws
GB/T 837-1988
Slotted pan head screws with waisted shank
GB/T 947-1988
Slotted large raised cheese head screws
GB/T 833-1988
Slotted large cheese head screws
GB/T 949-1988
Slotted ralsed countersunk head screws with waisted shank
