Patent ID: 11879487
Assignee: nan
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 16:
17. A self-tapping fastener comprising:
a head having a first diameter, configured to allow a torque-applying tool to apply a torque on the head to drive the self-tapping fastener for rotation;
a body portion, arranged distally of the head and elongately formed along a longitudinal direction, the body portion comprising:
a cylindrical, proximal threaded portion extending from a distal end of the head and having a second diameter, the proximal threaded portion being perpendicular to a central longitudinal axis,
a non-threaded conical intermediate portion, the non-threaded conical intermediate portion having at least two cutting edges that extends distally from the proximal threaded portion to a cylindrical distal threaded portion, the non-threaded conical intermediate portion having a third diameter, the third diameter being smaller than the first diameter, and the at least two cutting edges being symmetrical about the central longitudinal axis,
wherein the cylindrical distal threaded portion extends from a distal end of the cutting edge of the non-threaded intermediate portion, the cylindrical distal threaded portion having a fourth diameter, the fourth diameter being smaller than the second diameter, and,

a cutting tip, arranged distally of the body portion and extending from a distal end of the cylindrical distal threaded portion, the cutting tip comprising at least one cutting surface and being self-tapping, such that the cutting tip taps a hole as the cutting tip is driven into a surface.