A FEMALE-SIDE CONNECTOR (10 60) HAVING A LOCK MECHANISM FOR OBTAINING A FAVORABLE FASTENING FORCE CONSTANTLY. THE FEMALE-SIDE CONNECTOR (10 60) INCLUDES A CENTRAL AXIS (14 67) OF A ROOT (15 64) IN A MALE SCREW (12 62) PORTION OF A FEMALE-SIDE LOCK PORTION (41) THAT IS SCREWED TOGETHER WITH A FEMALE SCREW (23) PORTION OF A MALE-SIDE LOCK PORTION (42) IN A MALE-SIDE CONNECTOR (20) THAT INTERSECTS AT A PREDETERMINED ANGLE RELATIVE TO A CENTRAL AXIS (14 67) OF A THREAD (16 65). FIGURE 2