Fastener and method of installing same

摘要

A fastener comprises a body having an enlarged head at a first end, a tapered ramp at a second end, a cylindrical shank disposed between the enlarged head and the tapered ramp, internal threads, and a cylindrical passage formed through the body between the first and second ends. The fastener further includes a generally cylindrical corebolt having first and second threaded sections separated by a third non-threaded section, the corebolt disposed within the passage of the body and a sleeve having a generally cylindrical passage therethrough and movably disposed over a portion of the corebolt. A nut is in threaded engagement with the corebolt and is disposed adjacent an end of the sleeve. An interface between the corebolt and the nut is configured to resist relative rotation of the nut with respect to the corebolt until the sleeve is in abutment with a workpiece.

主权项

1. A fastener, comprising:
a body having an enlarged head at a first end, a tapered ramp at a second end, a cylindrical shank disposed between the enlarged head and the tapered ramp, internal threads, and a cylindrical passage formed through the body between the first and second ends; a generally cylindrical corebolt having first and second threaded sections separated by a third non-threaded section, the corebolt disposed within the passage of the body; a sleeve having a generally cylindrical passage therethrough and movably disposed over a portion of the corebolt; a nut in threaded engagement with the corebolt and disposed adjacent an end of the sleeve; and means for restricting relative rotation between the nut and the corebolt until the sleeve has formed a blind head against a workpiece.