A fastener for securing remnant-producing materials, a method of
manufacturing the fastener, and a method of using the fastener are
provided. The fastener is configured such that in use any remnants or
slivers produced by rotation of the fastener are forcibly driven into the
surface of the material. In one aspect, the fastener has two separate
threaded portions, a first or lower threaded portion and a second or
upper threaded portion. The threads on the lower threaded portion have a
pitch that is different from the threads on the upper threaded portion.
In one embodiment, the lower threaded portion threads have a larger pitch
than the threads on the upper threaded portion. In use, after the lower
threaded portion is completely inserted into the material, the upper
threaded portion of the fastener enters the material. Because the upper
threaded portion has threads that have a pitch that is different from the
threads on the lower threaded portion, the threads on the upper threaded
portion capture the remnants that have been extruded within or onto the
surface of the material. As the fastener is completely inserted into the
material, the remnants that have been extruded by the lower threaded
portion of the fastener are substantially retained in the bore by the
upper threaded portion of the fastener.