A collation strip for use within a nail gun is fabricated from a suitable polypropylene composition and has a relatively large thickness dimension, however, in order to impart enhanced flexibility to the thickened collation strip, the collation strip is provided with a plurality of auxiliary apertures within its spine section, or alternatively within its spine and hinged sections. Such enhanced flexibility permits the collation strip to be utilized under relatively low temperature conditions such that the collation strip will not experience jamming within the nail gun.