Abstract: A fastener is provided. The fastener includes an elongated shank having a longitudinal axis. The fastener also includes a head portion formed at a first end of the shank. The head portion includes an annular flange extending radially from the longitudinal axis. The fastener also includes a knurled section extending along at least a portion of the shank and disposed adjacent to the annular flange. The knurled section includes a plurality of grooves circumferentially surrounding the portion of the shank. The fastener also includes a smooth section extending along at least a portion of the shank and disposed adjacent to the knurled section. The fastener also includes a helical threaded portion extending axially along at least a portion of said shank toward a second end of the shank and disposed adjacent to the smooth section.

Abstract: A fastener is provided. The fastener includes an elongated shank extending along a longitudinal axis. The shank has a first end and a second end and a head portion is formed at the first end of the shank. The head portion includes an annular flange extending radially out from the longitudinal axis and has a first diameter. The fastener also includes a first section extending along at least a portion of the shank and disposed adjacent to the head portion. The fastener also includes a knurled section extending along at least a portion of the shank and disposed adjacent to the first cylindrical section where the knurled section includes a plurality of longitudinally extending grooves and peaks disposed around a circumference of the shank and a helical thread portion extending axially along at least a portion of said shank and disposed adjacent to the knurled section.