An externally threaded fastener with a dome-shaped head and an integrally formed washer; a recess that can accommodate either a Phillips or Square screwdriver; and a single lead thread. The shank has a reduced diameter. Applications / Advantages - The deeper thread design offers greater resistance to pull-out forces. The round washer head is preferable in softer woods and offers a greater bearing surface than a countersunk design. Used to attach surface-mounted door hinges or master lock hasps into dense woods or when attaching two pieces of wood through a pocket hole.]