Patent ID: 8529177

Claim:
A blind fastener for securing work piece having an open surface at a first side and a blind surface at a second side, the blind fastener comprising: a pin comprising: a main body section, the main body section comprising: a shear load bearing section integrally connected to a lock collar engagement section on a first end and a pin stalk section on a second end, the pin stalk section integrally connected to a series of pin sleeve integrating grooves; a tail section, having a series of serrations, integrally connected with the main body via a break notch; a deformable sleeve having a hollow tubular shank having a first sleeve end and a second sleeve end, the first sleeve end having a sleeve head having an opening for receiving the main body section of the pin, the series of serrations remaining outside the opening of the deformable sleeve during assembly of the blind fastener, the hollow tubular shank comprising: a first sleeve section integrally connected to the first sleeve end; a second sleeve section integrally connected to the first sleeve section; and a third sleeve section, integrally connected to the second sleeve section and the second sleeve end, having an internal surface for engaging the series of pin sleeve integrating grooves of the pin upon installation; wherein an outer lower portion of the deformable sleeve, corresponding to the first sleeve section, includes additional material; and wherein the shear load bearing section includes expansion ridges and the additional material is forced radially inward into the expansion ridges providing a fastener hole-filling capability.