A blind fastener comprising: a collet body comprising a first end defining a generally circular opening and a first wall portion adjacent to the first end, where the first wall portion includes an interior surface, an exterior surface, a protrusion extending from the exterior surface including a leading face oriented towards the first end and a trailing face oriented away from the first end, wherein the first wall portion defines at least two secondary slots extending longitudinally from the first end to respective termini to form at least two flexible fingers, each having a distal end at the first end, a second end defining a generally circular opening and a second wall portion adjacent to the second end, where the second wall portion has an interior surface and an exterior surface, wherein one of the interior surface of the first wall portion, the second wall portion, or the first wall portion and second wall portion includes a threaded portion, wherein the second wall portion defines at least one anti-rotation means slot extending longitudinally from the second end to a terminus to form at least one segment having at least two section face portions that form a first part of a two part anti-rotation means; and a cylinder body comprising a first end defining a generally circular opening and a first wall portion adjacent to the first end, where the first wall portion of the cylinder body has an interior surface and an exterior surface, and a second end defining a generally circular opening and a second wall portion adjacent to the second end, wherein the first wall portion of the cylinder body defines at least one anti-rotation means slot extending longitudinally from the first end of the cylinder body to a terminus to form at least one segment having at least two section face portions that form a second part of the two part anti-rotation means, and wherein the first and second parts of the two part anti-rotation means are matable to permit axial translation therebetween but prevent substantial rotation therebetween, characterized in that the second end of the cylinder body includes a tool interface (110, 112) for receiving a rotation arresting tool during operation of the fastener. a collet body comprising a first end defining a generally circular opening and a first wall portion adjacent to the first end, where the first wall portion includes an interior surface, an exterior surface, a protrusion extending from the exterior surface including a leading face oriented towards the first end and a trailing face oriented away from the first end, wherein the first wall portion defines at least two secondary slots extending longitudinally from the first end to respective termini to form at least two flexible fingers, each having a distal end at the first end, a second end defining a generally circular opening and a second wall portion adjacent to the second end, where the second wall portion has an interior surface and an exterior surface, wherein one of the interior surface of the first wall portion, the second wall portion, or the first wall portion and second wall portion includes a threaded portion, wherein the second wall portion defines at least one anti-rotation means slot extending longitudinally from the second end to a terminus to form at least one segment having at least two section face portions that form a first part of a two part anti-rotation means; and a cylinder body comprising a first end defining a generally circular opening and a first wall portion adjacent to the first end, where the first wall portion of the cylinder body has an interior surface and an exterior surface, and a second end defining a generally circular opening and a second wall portion adjacent to the second end, wherein the first wall portion of the cylinder body defines at least one anti-rotation means slot extending longitudinally from the first end of the cylinder body to a terminus to form at least one segment having at least two section face portions that form a second part of the two part anti-rotation means, and wherein the first and second parts of the two part anti-rotation means are matable to permit axial translation therebetween but prevent substantial rotation therebetween, the second end of the cylinder body includes a tool interface (110, 112) for receiving a rotation arresting tool during operation of the fastener.