Patent ID: 7677852
Filing Date: 2010-03-16
Classification: F16B

Abstract:
1. A lockbolt system comprising: a lockbolt which includes a head portion, a frangible pintail and a shaft which is disposed between the head portion and the frangible pintail, wherein the shaft includes a threaded portion which is threaded and has a multi-lobular cross-sectional profile; and a collar having a throughbore which has a multi-lobular cross-sectional profile which corresponds to the multi-lobular cross-sectional profile of the threaded portion of the shaft of the lockbolt, the collar further having a swageable portion and a non-swageable portion, the swageable portion including a cylindrical outer surface and being swageable onto the threaded portion of the shaft of the lockbolt, the non-swageable portion including a hex profiled outer surface, wherein because the threaded portion of the shaft of the lockbolt is threaded and multi-lobular, the threaded portion of the shaft provides that the collar is selectively rotatably removable and re-installable on the lockbolt upon a standard hex tool applying torque to the hex profiled outer surface of the non-swageable portion of the collar.