Cheese
Wing
Low cheese head
Raised cheese
Thumb
Cross Head
Flat T-head
Large cheese head
Cheese with shoulder
GB/T 839-1988
Knurled thumb screws with walsted shank-Type A
DIN 7964F-1990
Slotted knurled thumb screws with waisted shank-K end
DIN 7964F-1990
Slotted knurled thumb screws with waisted shank-Sp end
QJ 2381-1992
Knurled thumb screws with waisted shank