A nut plate assembly comprising: a base plate having a top and a bottom, the top configured to face an inner surface of a mounting structure, the base plate having base plate openings therethrough, the base plate having a first side and a second side, the base plate having a front edge and a rear edge, the base plate including a reinforcement lip at the front edge of the base plate, the reinforcement lip being non-coplanar with the base plate and extending between the first side and the second side; channel fittings coupled to the bottom of the base plate, each channel fitting including a main body having a top and a bottom, the top of the main body facing the bottom of the base plate, the main body having an opening aligned with a corresponding base plate opening of the base plate openings in the base plate, each channel fitting having a nut cap channel at the bottom of the main body aligned with the opening in the main body; and nut caps coupled to the channel fittings and positioned below the bottom of the main body, the nut caps being received in the nut cap channels of the channel fittings, each nut cap having a pocket open at a top of said nut cap, the pocket being such as to hold a nut aligned with the opening in the main body and the corresponding base plate opening to receive a fastener, used to secure the base plate to a mounting structure from an exterior surface of the mounting structure, through the base plate and the main body of a channel fitting of the channel fittings, wherein each channel fitting includes a front support wall to engage the reinforcement lip to support the reinforcement lip, and wherein the reinforcement lip is a curved wall extending from the base plate at the front edge. a base plate having a top and a bottom, the top configured to face an inner surface of a mounting structure, the base plate having base plate openings therethrough, the base plate having a first side and a second side, the base plate having a front edge and a rear edge, the base plate including a reinforcement lip at the front edge of the base plate, the reinforcement lip being non-coplanar with the base plate and extending between the first side and the second side; channel fittings coupled to the bottom of the base plate, each channel fitting including a main body having a top and a bottom, the top of the main body facing the bottom of the base plate, the main body having an opening aligned with a corresponding base plate opening of the base plate openings in the base plate, each channel fitting having a nut cap channel at the bottom of the main body aligned with the opening in the main body; and nut caps coupled to the channel fittings and positioned below the bottom of the main body, the nut caps being received in the nut cap channels of the channel fittings, each nut cap having a pocket open at a top of said nut cap, the pocket being such as to hold a nut aligned with the opening in the main body and the corresponding base plate opening to receive a fastener, used to secure the base plate to a mounting structure from an exterior surface of the mounting structure, through the base plate and the main body of a channel fitting of the channel fittings, wherein each channel fitting includes a front support wall to engage the reinforcement lip to support the reinforcement lip, and wherein the reinforcement lip is a curved wall extending from the base plate at the front edge.