A roofing and siding fastener for securing underlayments, exterior insulation sheathings, and similar membranes to a substrate. The disclosure comprises a cap portion having a rectangular body with oppositely extended legs. Said legs are bent downward and have heels situated at the ends. The cap has...http://www.google.es/patents/US5415511?utm_source=gb-gplus-sharePatente US5415511 - Multipurpose roofing and siding fastener
