A double-sided milling insert (21, 21') comprising: a first generally rectangular surface that faces in a first direction, the first surface having four corners (29a, 29b, 31a, 31b) defining two identical major first edges (33a, 33b) and two identical minor first edges (35a, 35b); a second generally rectangular surface identical to the first surface and facing in a second direction opposite the first direction, the second surface having four corners (29a', 29b', 31a', 31b') defining two identical major second edges (33a', 33b') and two identical minor second edges (35a', 35b'); a side surface extending between the first surface and the second surface, the side surface comprising four identical corner surfaces (39a, 39b, 41a, 41b), two identical major side surfaces (43, 43'), and two identical minor side surfaces (45, 45'), each corner surface extending between a respective one of the four corners (29a, 29b, 31a, 31b) of the first surface and a respective one of the four corners (29a', 29b', 31a', 31b') of the second surface and defining therewith one cutting corner (29a, 29b, 29a', 29b') and one non-cutting corner (31a, 31b, 31a', 31b'), each major side surface (43, 43') extending between respective major first and second edges (33a, 33a' and 33b, 33b') and defining therewith two major cutting edges (49a, 49a' and 49b, 49b') at opposite ends of the major side surface (43, 43'), and each minor side surface (45, 45') extending between respective minor first and second edges (35a, 35a' and 35b, 35b') and defining therewith two minor cutting edges (51a, 51a' and 51b, 51b') at opposite ends of the minor side surface (45, 45'); four cutting edges, each cutting edge comprising a respective major cutting edge (49a, 49b, 49a', 49b'), cutting corner (29a, 29b, 29a', 29b'), and minor cutting edge (51a, 51b, 51a', 51b'), wherein a central axis extends through the first surface and the second surface and intersects with and is perpendicular to planes of the first surface and the second surface, characterized in that, when each first and second major edge (33a, 33b, 33a', 33b') is viewed along the central axis, a first portion (67a, 67b, 67a', 67b') of each major side surface (43, 43') adjacent the first and second major cutting edges (49a, 49a' and 49b, 49b') is disposed outward of the first and second major edge (33a, 33b, 33a', 33b') relative to the central axis with less of the first portion (67a, 67b, 67a', 67b') being disposed outwardly of the first and second major edge (33a, 33b, 33a', 33b') at the cutting corner (29a, 29b, 29a', 29b') than at the non-cutting corner (31a, 31b, 31a', 31b'). a first generally rectangular surface that faces in a first direction, the first surface having four corners (29a, 29b, 31a, 31b) defining two identical major first edges (33a, 33b) and two identical minor first edges (35a, 35b); a second generally rectangular surface identical to the first surface and facing in a second direction opposite the first direction, the second surface having four corners (29a', 29b', 31a', 31b') defining two identical major second edges (33a', 33b') and two identical minor second edges (35a', 35b'); a side surface extending between the first surface and the second surface, the side surface comprising four identical corner surfaces (39a, 39b, 41a, 41b), two identical major side surfaces (43, 43'), and two identical minor side surfaces (45, 45'), each corner surface extending between a respective one of the four corners (29a, 29b, 31a, 31b) of the first surface and a respective one of the four corners (29a', 29b', 31a', 31b') of the second surface and defining therewith one cutting corner (29a, 29b, 29a', 29b') and one non-cutting corner (31a, 31b, 31a', 31b'), each major side surface (43, 43') extending between respective major first and second edges (33a, 33a' and 33b, 33b') and defining therewith two major cutting edges (49a, 49a' and 49b, 49b') at opposite ends of the major side surface (43, 43'), and each minor side surface (45, 45') extending between respective minor first and second edges (35a, 35a' and 35b, 35b') and defining therewith two minor cutting edges (51a, 51a' and 51b, 51b') at opposite ends of the minor side surface (45, 45'); four cutting edges, each cutting edge comprising a respective major cutting edge (49a, 49b, 49a', 49b'), cutting corner (29a, 29b, 29a', 29b'), and minor cutting edge (51a, 51b, 51a', 51b'), wherein a central axis extends through the first surface and the second surface and intersects with and is perpendicular to planes of the first surface and the second surface, characterized in that, when each first and second major edge (33a, 33b, 33a', 33b') is viewed along the central axis, a first portion (67a, 67b, 67a', 67b') of each major side surface (43, 43') adjacent the first and second major cutting edges (49a, 49a' and 49b, 49b') is disposed outward of the first and second major edge (33a, 33b, 33a', 33b') relative to the central axis with less of the first portion (67a, 67b, 67a', 67b') being disposed outwardly of the first and second major edge (33a, 33b, 33a', 33b') at the cutting corner (29a, 29b, 29a', 29b') than at the non-cutting corner (31a, 31b, 31a', 31b').