Slot
Cheese
Wing
Low cheese head
Raised cheese
Thumb
Cross Head
Flat T-head
Large cheese head
Cheese with shoulder
Straight-knurl
Reduced shank
Normal shank
Waisted shank
Full thread
Flat point
Cone point
Dog point
Round point
GB/T 836-1988
Knurled screws with small head
GB/T 840-1988
Plastle dlamond knurl haed screws-type A