Improvements to blind Fastener, two pieces that serves to hold multiple workpieces

摘要

A two piece blind fastener for securing a plurality of workpieces including a hollow sleeve having an enlarged sleeve head at one end, a pin having an enlarged pin head, the pin having a pin stop shoulder and a lock groove located near the pin stop shoulder, the pin head adapted to engage the sleeve to form a blind head in response to a relative axial force applied between the pin and sleeve, the pin stop shoulder adapted to engage the stop shoulder with the material of the sleeve stop shoulder being directed substantially radially inwardly into the lock groove to lock the pin and sleeve together and to finally form a stop surface on the sleeve for stopping axial movement of the pin through the sleeve.