Blind rivet

A method of manufacturing a multi-grip blind rivet, the method comprising:

• placing a mandrel through a shell, the mandrel abutting against a blind end of the shell and having a head and a stem extending from the head, the stem having a point of weakness part way along its length and disposed within the shell, the shell having an outwardly extending flange at one end forming a rivet head;
• crimping the shell around the periphery of the shell at a first distance from the flange so as to form radial indentations such that when viewed in cross section through the length of the indentations the radial indentations are arc shaped;
• crimping the shell around the periphery of the shell at a second distance from the flange so as to form radial indentations such that when viewed in cross section through the length of the indentations the radial indentations are arc shaped;
• and
• creating an intermediate surface located radially in between the radial indentations when viewed in cross section through the length of the indentations, the intermediate surface being defined by a first sloping edge, a second sloping edge and a mid-portion between the first and second sloping edges, said mid-portion having a curvature equal to an exterior radius of the shell, wherein the radial indentations have a thickness between about 15 to about 30% of the shell thickness.