| 摘要 |
A fastening member related to the present invention comprises the following:
(1) a head 15a to transmit rotational force of fastening tool;
(2) a seating face 15b located next to the head 15a and contacting a partner member upon fastening;
(3) a neck 15d provided in a standing position from the seating face 15b at the opposite side to the head 15a;
(4) an external thread 15c having a smaller diameter than the neck 15d and connected to the neck 15d;
(5) an internal thread 15e drilled on a same axis with the external thread 15c at an inner circumference of the head 15a or an inner circumference of the head 15a and at least a part of the neck 15d; and
(6) an inner circumference escape part 15f having a larger diameter than the internal thread 15e and drilled on the same axis with the external thread 15c at an inner circumference of at least a part of the neck 15d and the external thread 15c. |
