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The Aerospace Industries Association is the premier trade association representing major aerospace and defense manufacturers and suppliers in the United States. In addition, AIA is a standards developer responsible for the National Aerospace Standards, which are known for the NAS parts and standard practices used throughout the aerospace industry. The NAS library contains over 1300 active standards. AIA, in partnership with IHS and PARTsolutions, offers a library of 3D CAD models based on the most used NAS parts. This valuable tool helps engineers across the aerospace and defense industry to accelerate innovation, shorten design cycles, reduce costs, and engineer smarter.