Patent ID: 7140825
Filing Date: 2006-11-28
Classification: F16B,Y10T

Abstract:
1. A self tapping bolt which fastens a mounting member and a receiving member while said bolt cuts internal threads on an inner surface of a tap drill hole prepared in said receiving member, comprising: at least one groove formed near an end of a threaded portion of said bolt; a blade for cutting said internal threads, wherein said blade is formed only on a rear end surface of said at least one groove relative to a rotational direction of said bolt which is screwed into said tap drill hole; a radially reduced body having a diameter which is smaller than a minor diameter of male threads, between a non-threaded head and said threaded portion of said bolt, said non-threaded head having a constant outer diameter; and a body whose diameter is larger than the radially reduced body and substantially the same as a diameter of a through hole of said mounting member in order to guide said bolt into said through hole, wherein the radially reduced body is directly adjacent to both the threaded portion and the larger diameter body, and wherein the larger diameter body is adjacent to both the non-threaded head and the radially reduced body.