Hex socket
Hex socket with centre
Hex socket with pin
Round head
Countersunk head
Cheese
Round head with collar
Low cheese head
Cheese with hole
Straight-knurl
Normal shank
Shoulder
Waisted shank
Full thread
Flat point
Cone point
GB/T 70.3-2008
Hexagon socket countersunk head screws
GB/T 70.3-2000
GB/T 70.3-2023
Hexagon socket countersunk head screws with reduced loadability