Fastener for thin material and method for installing same.

摘要

A fastener for material which is less than one millimeter in thickness and a method for installing the fastener in the material so as to preclude rotational and axial movement of the fastener are provided. The fastener (14) has a serrated portion (17) which, prior to and following installation, lies substantially in the same plane as an opening (13) in the sheet of thin material in which the fastener is inserted for securement. The originally flat area (12) surrounding the opening (13) is deformed prior to installing the fastener. The fastener becomes immovable relative to the sheet when the deformed area (12) surrounding the opening (13) is returned by force to its original flat state so that it surrounds and contacts the serrated portion (17) of the fastener.