In certain embodiments, a mounting apparatus includes one or more standoffs adapted to maintain two panels at a spaced apart distance from one another. The standoff includes a first end having a first threaded fastening member and a second end having a cavity in which a torque restraining member is disposed. The torque restraining member is coupled to a second threaded fastening member. The relative sizes of the torque restraining member and the cavity allow movement of the torque restraining member within the cavity.