Fastening member and compressor apparatus

A fastening member for use in coupling between one side member including a non-circular attachment hole having an opening portion formed at a part of a circumference of the non-circular attachment hole, and an opposite side member including an insertion hole, the fastening member comprising:

• a bolt including
• a shaft portion and configured to be inserted in the attachment hole from the opening portion of the attachment hole and having a male screw formed at least a distal end side of the shaft portion, and
• a head portion formed at a proximal end side of the shaft portion and configured so as to be unable to pass through the attachment hole when the shaft portion is inserted through the attachment hole, the shaft portion being configured in such a manner that the opposite side member is attached to the shaft portion;
• a washer including a through-hole, through which the shaft portion of the bolt is inserted, the washer being configured to be prevented from rotating relative to the bolt and sandwich the one side member between the washer and the head portion;
• and
• a nut configured to be screwed with the bolt and configured to couple the one side member and the opposite side member,
• wherein the shaft portion of the bolt includes a non-circular relative rotation prevention portion at a head portion side of the shaft portion, the relative rotation prevention portion being configured to abut against the non-circular attachment hole in a rotational direction to prevent a relative rotation between the bolt and the one side member.