Patent ID: 6868757

Claim:
A blind fastener in combination with an installation tool, the blind fastener for securing a plurality of workpieces together in response to a relative rotational force applied to the blind fastener, the workpieces having an accessible side workpiece and a blind side workpiece, the combination comprising: a sleeve having a body that is internally threaded at one end of the sleeve and a head at another end of the sleeve, the threaded portion of the sleeve being adjacent to an internally smooth portion of the sleeve, the threaded portion of the sleeve transitioning to the smooth portion of the sleeve, the smooth portion of the sleeve having a reduced wall thickness relative to the threaded portion of the sleeve, the head having a generally smooth exterior surface with a plurality of rearwardly sloping recesses disposed in a generally circular orientation in the generally smooth exterior surface in the head of the sleeve; and a pin member having an elongated shank, the shank having a straight smooth portion received within the smooth portion of the sleeve and a threaded portion at one end of the pin member threadedly engaged with the threaded portion of the sleeve, the pin member having a first head adjacent to the shank that is seated within the sleeve and a second splined head adjacent to the first head, the pin member having a breakneck groove between the first head and the second head, the breakneck groove being adapted to fracture in torsional shear in response to the relative rotational force applied to the fastener with a splined driver engaging the second splined head that facilitates threading of the threads of the pin member with the threads of the sleeve during actuation of the installation tool secured to the splined driver, wherein the installation tool has a plurality of rearwardly sloping nibs disposed in a generally circular orientation on one end of a nose, wherein the nibs engage the recesses disposed in the head of the sleeve, do not cam out of the recesses and hold the sleeve stationary during actuation of the installation tool, and wherein the portion of the sleeve that is of a reduced wall thickness relative to the threaded portion of the sleeve and is adjacent to an outer surface of the blind side workpiece is annealed to facilitate deformation into a bulb to secure the plurality of workpieces together in response to the rotational force applied to the fastener with the installation tool.