A track link which is configured to be fixed to a track shoe with bolts and nuts, comprising: two connecting holes (40, 42) which are spaced from each other by a predetermined distance in a link pitch direction and are configured to receive a link connection member respectively; a first through hole which extends orthogonal to the connecting holes (40, 42) and is configured to receive one of the bolts; a first surface in which the first through hole opens and on which one of the nuts is to be placed; a second through hole which extends orthogonal to the connecting hole and is configured to receive another bolt; a second surface in which the second through hole opens and on which another nut is to be placed; first projecting portions (48a, 48b) as a pair, each projecting from the first surface and facing each other in the link pitch direction across the first through hole; and second projecting portions (52a, 52b) as a pair, each projecting from the second surface and facing each other in the link pitch direction across the second through hole, characterized in that: the first projecting portions (48a, 48b) are spaced apart from each other by a first distance through which one of the first projecting portions (48a, 48b) engages with the nut that is to be placed between the first projecting portions (48a, 48b) but the other of the first projecting portions (48a, 48b) does not; and the second projecting portions (52a, 52b) are spaced apart from each other by a second distance through which one of the second projecting portions (52a, 52b) engages with the nut that is to be placed between the second projecting portions (52a, 52b) but the other of the second projecting portions (52a, 52b) does not, or both of the second projecting portions (52a, 52b) engage with the nut. two connecting holes (40, 42) which are spaced from each other by a predetermined distance in a link pitch direction and are configured to receive a link connection member respectively; a first through hole which extends orthogonal to the connecting holes (40, 42) and is configured to receive one of the bolts; a first surface in which the first through hole opens and on which one of the nuts is to be placed; a second through hole which extends orthogonal to the connecting hole and is configured to receive another bolt; a second surface in which the second through hole opens and on which another nut is to be placed; first projecting portions (48a, 48b) as a pair, each projecting from the first surface and facing each other in the link pitch direction across the first through hole; and second projecting portions (52a, 52b) as a pair, each projecting from the second surface and facing each other in the link pitch direction across the second through hole, characterized in that: the first projecting portions (48a, 48b) are spaced apart from each other by a first distance through which one of the first projecting portions (48a, 48b) engages with the nut that is to be placed between the first projecting portions (48a, 48b) but the other of the first projecting portions (48a, 48b) does not; and the second projecting portions (52a, 52b) are spaced apart from each other by a second distance through which one of the second projecting portions (52a, 52b) engages with the nut that is to be placed between the second projecting portions (52a, 52b) but the other of the second projecting portions (52a, 52b) does not, or both of the second projecting portions (52a, 52b) engage with the nut. the first projecting portions (48a, 48b) are spaced apart from each other by a first distance through which one of the first projecting portions (48a, 48b) engages with the nut that is to be placed between the first projecting portions (48a, 48b) but the other of the first projecting portions (48a, 48b) does not; and the second projecting portions (52a, 52b) are spaced apart from each other by a second distance through which one of the second projecting portions (52a, 52b) engages with the nut that is to be placed between the second projecting portions (52a, 52b) but the other of the second projecting portions (52a, 52b) does not, or both of the second projecting portions (52a, 52b) engage with the nut.