Abstract: Closable chain link (1) with an open limb (2), comprising a filler (9) connected to a locking member rotatable relative thereto, which is confined within the space enclosed by the link (1) so as to be restrained from sliding movement in axial direction and is fitted with an axially slidable locking mechanism (29, 30) arranged internally of the locking member (15). By compression of a spring (17), which normally keeps the locking mechanism (29, 30) in the locked position, this mechanism (29, 30) can be brought in a position wherein the locking member (15) is coupled to the retaining member (14) in the direction of rotation.