In a chain joint (1) for link chains, having a main body (2) in the form of an oval chain link with two mutually parallel longitudinal legs (3, 4) which are connected to one another at their ends in each case via a rounded link portion (5, 6) and one of which has an interruption for forming a receiving opening (7) for the hooking-in of oval chain links into an internal opening (8) of the main body (2), said receiving opening being bounded at its ends by in each case one longitudinal leg section (4A, 4B), wherein, in said longitudinal leg (4), there is provided a threaded bore (9) which runs in the longitudinal direction of said longitudinal leg and which extends in both longitudinal leg sections (4A, 4B) and into which there can be screwed a closure screw (10) which, in the screwed-in state, engages with the threaded bore (9) in both longitudinal leg sections (4A, 4B), it is provided that, while maintaining the predefined sizes for outer circumference (A) and link width (B) of the main body (2), said main body is provided, in the region of its longitudinal legs (3, 4), with a profile cross section (Q1) that is larger than the profile cross section (Q2) in the region of its rounded link portions (5, 6).