Abstract: A connecting chain link with two loops for accommodating chain links of attached chain lengths comprises two main link parts identical in shape and dimensions and assembled along a first contact surface and a second contact surface which is complementary to the first one, and a limiting surface in the central portion of the link. The contact surfaces extend between an origin at the outer periphery of the link and close to a transverse axis thereof, and a termination at the inner periphery of one of the loops. The contact surfaces consist of a plurality of differently oriented surface sections and are so shaped as to form a plurality of intermeshing lug and recess means which effectively oppose tension stresses in the longitudinal direction and all stresses in the transverse directions, the latter ones particularly efficiently at the locations of said origins.