Screws HH 08×22 for stainless steel link plates
Adapted for furling system models :
FD090 / FD110
FD170 / FD190
FD210 / FD230
Rep 15 on FD01 exploded drawing
Those screws are used to assemble the link plates to the drum.
FD: Please refer to page 26 rep S of the FD installation manual 29160040010