An integral one-piece nail/disk structure which eliminates the need of having any exposed nails associated with a shingled roof, the nail/disk structure including a body member having a roofing nail incorporated or encapsulated therewithin and having color granules associated with at least a portion of the top surface of the body member. The nail/disk structure may include a sealant covering at least a portion of the bottom surface of the body member. The roofing nail is integrally formed with the body member.

A fixing bolt contains: a flexible sleeve and a locking nail. The flexible sleeve includes an internal threaded section, a conical groove, multiple engagement ribs, and multiple projected wings. The locking nail includes an external threaded section configured to movably screw with the internal threaded section of the flexible sleeve, a driving head, and a forcing portion. A bottom tip of the conical groove is located on a central position of a central axis of the flexible sleeve, any two adjacent of the multiple engagement ribs are spaced by each of multiple slits, the multiple slits intersect with one another on the central position of the central axis of the flexible sleeve, and the multiple slits are in communication with the bottom tip of the conical groove. Furthermore, the forcing portion of the locking nail is conical and has a conical face and a tip.

Various embodiments of the present disclosure provide a nail with a head having an inwardly curved top surface. In one embodiment, the nail has a longitudinal axis and comprises a head, a shank, and a tip. The head includes a top portion and a bottom portion. The top portion includes an inwardly curved top surface forming a partially spherical cavity, while the bottom portion includes a radially inwardly tapered annular bottom surface. The shank is integrally connected to and extends from the bottom portion of the head. The tip is integrally connected to and extends from the shank and terminates in a free end.

Various embodiments of the present disclosure provide a nail with a head having an inwardly curved top surface. In one embodiment, the nail has a longitudinal axis and comprises a head, a shank, and a tip. The head includes a top portion and a bottom portion. The top portion includes an inwardly curved top surface forming a partially spherical cavity, while the bottom portion includes a radially inwardly tapered annular bottom surface. The shank is integrally connected to and extends from the bottom portion of the head. The tip is integrally connected to and extends from the shank and terminates in a free end.

A fastener comprises a shank having a first end having a point and a second end having a head. The shank includes a first region beginning at the first end and having a cylindrical cross-section with a first diameter along at least a portion of the first region; and a second region extending from the first region to the head and having a cross section with a second diameter greater than the first diameter. The first region may include a distortion adjacent the tip encompassing at least a portion of a surface of the first region, the distortion having a third diameter greater than the first diameter and less than or equal to the second diameter.

A fastener comprises a shank having a first end having a point and a second end having a head. The shank includes a first region beginning at the first end and having a cylindrical cross-section with a first diameter along at least a portion of the first region; and a second region extending from the first region to the head and having a cross section with a second diameter greater than the first diameter. The first region may include a distortion adjacent the tip encompassing at least a portion of a surface of the first region, the distortion having a third diameter greater than the first diameter and less than or equal to the second diameter.

A self-sealing fastener for reducing leaks between the self-sealing fastener and a substrate. The self-sealing fastener includes a shank that extends longitudinally between a first end and a second end. The shank has an outer surface. The self-sealing fastener also includes a head that extends radially outwardly from the first end of the shank. The head has an underside surface that is adjacent to the first end of the shank and a topside surface opposite the underside surface. A mastic sealant is disposed on at least one of the outer surface of the shank and the underside surface of the head to provide a water-tight seal between the self-sealing fastener and the substrate after the self-sealing fastener is installed in the substrate.

The present disclosure relates to a drive screw for connecting a carrier formed of foamed material to a part to be affixed to the carrier. In one implementation, the drive screw includes a threaded pin with a first end having shaped elements configured to connect to a tool that transfers torque and a second end configured to penetrate into the carrier. In addition, the first end of the threaded pin may be surrounded by and connected to an interlock component, and the part to be affixed may have an interlock receiving space corresponding to the interlock component.

The present disclosure relates to a drive screw for connecting a carrier formed of foamed material to a part to be affixed to the carrier. In one implementation, the drive screw includes a threaded pin with a first end having shaped elements configured to connect to a tool that transfers torque and a second end configured to penetrate into the carrier. In addition, the first end of the threaded pin may be surrounded by and connected to an interlock component, and the part to be affixed may have an interlock receiving space corresponding to the interlock component.

A construction nailing screw is configured to be used in like manner as traditional nails but rotate during driving through threading, providing retention of the construction nailing screw in the construction material(s), and the ability to be removed from the construction material(s) by reverse rotation. The construction nailing screw is characterized by a shank with a head on one longitudinal end, and a tip on another longitudinal end, with external threading that provides minimal friction during installation and mild resistance during removal, and two cutouts extending along the exterior of the shank and through the external threading. The head allows both a manual installation tool and an automatic installation tool to strike the head and drive (install) the nailing screw. The external threading has an upper side with a high pitch relative to the longitudinal axis of the shank, and a lower side with a low pitch relative to the longitudinal axis of the shank.