Drivable screw nail
An impact-driven threaded nail includes a threaded portion with a lead angle of about 45°, the threaded portion being defined along an outer circumference of a nail shank that includes a first end defined as a pointed tip; and a head having a larger diameter than the nail shank, the head being integrally provided at a second end of the nail shank, wherein a tapered portion of the head on a back-surface side in continuation with the nail shank is defined in a pyramidal shape having one of regular pentagonal to octagonal cross-sections with a diameter decreasing gradually toward the nail shank, and the threaded nail is configured to be impact-driven and rotate into a mounting member when impacted.
1. An impact-driven threaded nail comprising:
a threaded portion with a lead angle of about 45°, the threaded portion being defined along an outer circumference of a nail shank that includes a first end defined as a pointed tip; and
a head having a larger diameter than the nail shank, the head being integrally provided at a second end of the nail shank, wherein
a tapered portion of the head on a back-surface side in continuation with the nail shank is defined in a pyramidal shape having a regular hexagonal cross-section with a diameter decreasing gradually toward the nail shank,
an internal angle (θ) of the tapered portion of the head is in a range of about 60° to about 80°, and
the threaded nail is configured to be impact-driven and rotate into a mounting member when impacted.
2. The impact-driven threaded nail according to claim 1 , wherein an angle of the pointed tip is 60 degrees.
3. An impact-driven threaded nail comprising:
a threaded portion provided with ridges and grooves in multiple threads, the threaded portion being defined along an outer circumference of a nail shank that includes a first end defined as a pointed tip, and
a head having a larger diameter than the nail shank, the head being integrally provided at a second end of the nail shank, wherein
a tapered portion of the head on a back-surface side in continuation with the nail shank is defined in a pyramidal shape having a regular hexagonal cross-section with a diameter decreasing gradually toward the nail shank,
an internal angle (θ) the tapered portion of the head is in a range of about 60° to about 80°, and
the threaded nail is configured to be impact-driven and rotate into a mounting member when impacted.
4. The impact-driven threaded nail according to claim 3 , wherein an angle of the pointed tip is 60 degrees.