Abstract: A nail magazine for use in a power nailing hand tool to hold and feed a rolled belt of nails is constructed to include a casing, a magazine shaft vertically disposed inside the casing at the center, the magazine shaft having an upright shaft at the center inside the casing and a nail carrier sleeve vertically movably supported on a magazine spring around the upright shaft and adapted to carry a rolled belt of nails for feeding, and a cover hinged to the casing, the cover defining with the casing a nail feed hole when closed on the casing.

Abstract: A metal piercing fastener having an elongated flat body having first and second surfaces with a heat at one end and a piercing point at the other. The thickness dimension of the flat body is greater proximate the head proximate the point. The first and second surfaces of the body are devoid of protrusions extending outwardly therefrom.

Abstract: A fastener for securing a drywall work piece to a metal substrate. The fastener includes an elongated flat body carrying a securing member and having a driving head disposed at a substantially right angle to the elongated flat body. The driving head defines a bore therein surrounded by a downwardly directed flange having a distal cutting edge which cuts the top paper laminate of the drywall allowing the head to countersink into the drywall without damaging the top paper laminate.

Abstract: A metal piercing fastener includes an elongated body with an internal void and a securing member carried by the elongated body and adapted to grip and lock pierced work pieces together. The securing member is adapted to be accommodated in the internal void and is twisted about its longitudinal axis. The twisted securing member includes a substantial portion being thinned relative to the thickness of the elongated body to optimize resiliency of the securing member.

Abstract: A metal piercing fastener for securing a light gauge sheet metal layer to metal/non-metal substrate layer(s) includes an elongated metal body having a crown at one end a sharpened and hardened tip at the other end defining a rigid metal penetrating region. The crown receives an impact blow from a tool for driving the rigid metal penetrating tip region in the substrates to be fastened. The metal body is equipped with one or more resilient tines each twisted at the base around its longitudinal axis and which can be integral or coupled to the metal body to optimize the gripping and clamping capability of the metal piercing fastener. The resilient tine may be equipped with protruding gripping and clamping elements on each side or with ribs on one of its outer surfaces to provide spring action gripping and clamping capability during fastening. The resilient tine is capable of deflection to conform to the physical constraints of the pierced substrate opening when passing through the pierced opening.