Abstract: A self-drilling rivet (1) is provided. The self-drilling rivet comprises a bearing collar (3) and an expandable hollow tubular body (2), the body (2) having, at one end, a first cylindrical portion (5) adjacent to the collar (3), and at the other end of the body (2), a second cylindrical portion (6) arranged to receive a drill element (4), and between the cylindrical first and second portions (5, 6), a third portion (7) that is expandable. The third portion (7) of the body (2) and the drill element (4) have respective connection means (11, 15) that are arranged so as to separate the drill element (4) from the body (2) during expansion of the third portion (7) of the body (2).

Abstract: A self-piercing rivet comprising a bearing flange and a piercing end with an expandable hollow tubular body extending axially between the flange and the piercing end, the body comprising a cylindrical first portion that is adjacent to the flange, a cylindrical second portion that is adjacent to the piercing end, and a radially-expandable third portion between said cylindrical first and second portions, the rivet further comprises a breakable rod that extends axially inside the hollow body to drive the body in axial rotation and to deform it radially at said expandable third portion under the effect of axial traction. The third portion (7) of the body is designed to produce, before being deformed radially, an abrasion or deburring effect on the peripheral edge of a hole being pierced by the piercing end.

Abstract: A self-piercing rivet comprises a bearing flange and a piercing end with a radially-expandable hollow tubular body extending axially between the flange and the piercing end, the body comprising a cylindrical first portion that is adjacent to said flange, a cylindrical second portion that is adjacent to said piercing end, and an expandable barrel-shaped third portion between the cylindrical first and second portions, and a bushing arranged in the second portion that is designed to be driven in axial translation towards the flange. The bushing extends axially inside the third portion of the tubular body in such a manner that it is inserted into said first portion of the body when the third portion is completely expanded. The third portion of the body is designed to produce, before being deformed radially, an abrasion or deburring effect on the peripheral edge of a hole being pierced by said piercing end.