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 . <EOS>