Patent ID: 7628573

Claim:
A self-piercing rivet comprising a rivet head and a rivet shank with a central shank hole, which are all designed so as to be rotationally symmetrical with reference to a central axis, wherein the rivet head has a top side and a cylindrical head exterior surface of a predetermined head diameter, the rivet shank having an essentially cylindrical shank exterior surface and a cylindrical shank interior surface limiting the central shank hole, the head exterior surface and shank exterior surface being joined by a conical underhead chamfer and an underhead radius, which merges tangentially into the conical underhead chamfer and the shank exterior surface, wherein the conical underhead chamfer and a radial plane of the self-piercing rivet include an angle of 20°+5°/−5°, and the shank exterior surface and shank interior surface at the axial end remote from the rivet head being joined by a plane shank face, a conical shank inside chamfer and a shank end radius, of which the shank end radius merges tangentially into the shank interior surface and the conical shank inside chamfer, and the plane shank face is joined with the shank exterior surface by a cutting surface, the plane shank face and a radial plane of the self-piercing rivet including an angle of 0 −3°/+3° and the conical shank inside chamfer and a radial plane of the self-piercing rivet including an angle of 45°+10°/−5°.