Blind fastener

A fastener comprising:

• a nut that defines a nut bore through said nut along a longitudinal axis, wherein said nut comprises a nut head on a first end, a second end, an unthreaded cylindrical recess extending from said second end toward said first end, and a first shoulder in said cylindrical bore positioned between said internal threads and said unthreaded cylindrical recess, wherein said first end comprises a generally planar surface and three recesses formed from said planar surface about an opening to the nut bore;
• a bolt comprising a bolt head, an externally threaded portion, a shank positioned between said externally threaded portion and said bolt head and a second shoulder on said shank, wherein an outer diameter of said shank is larger than a major diameter of said nut bore, and wherein an outer diameter of said shank is smaller than an internal diameter of said unthreaded cylindrical recess;
• and
• a sleeve defining a sleeve bore, wherein said sleeve is positioned between said nut and said bolt head about said bolt, wherein said sleeve is operatively deformed to form an upset portion during installation.

A fastener comprising:

• a nut comprising a through bore through said nut, a first end comprising a head that comprises an opening to said through bore, a cylindrical outer surface, a second end comprising an external tapered ramp surface, an unthreaded cylindrical recess extending from said second end toward said first end, and a first shoulder in said cylindrical bore positioned between said through bore and said unthreaded cylindrical recess, wherein said head comprises a generally planar surface comprising three recesses formed through the generally planar surface about said opening to said through bore;
• a bolt comprising a bolt head, an externally threaded portion, an enlarged shank positioned between said externally threaded portion and said bolt head and a second shoulder on said enlarged shank, wherein an outer diameter of said enlarged shank is larger than a major diameter of said internally threaded cylindrical bore, wherein an outer diameter of said enlarged shank is smaller than an internal diameter of said unthreaded cylindrical recess;
• and
• a sleeve comprising an unthreaded cylindrical bore, wherein said bolt is positioned through said sleeve, and wherein said sleeve is positioned between said external tapered ramp surface and said bolt head, wherein said sleeve operatively forms a blind side upset when said bolt head applies force to said sleeve and wherein said first and second shoulders are adapted to abut and block further movement of said bolt relative to said nut when the blind side upset is fully formed.