Downloaded from https://www.everyspec.com MIL-STD-31000A e. The use of National Aerospace Standard NAS 3500 “Technical Data Package: Composition, Communication, and Application” may be used to facilitate the acceptance and inspection of the TDP if required in the contract or purchase order. 4.12 Legibility and reproducibility. All data prepared or submitted shall meet the legibility and reproducibility requirements of the specification or standard controlling the media in which the data is to be delivered. As a minimum, all lines, symbols, letters, and numerals shall be readable. 4.13 CAGE codes.
When CAGE Codes are to be applied to documents used in TDPs and TDP elements, only valid codes identified in the Federal Cataloging Handbook H4/H8 shall be used. 4.13.1 Type CAGE codes. Type “A" or “E” codes shall be used to identify design activities and vendors' part or identifying numbers and sources of supply except when industry marketing customs dictate otherwise. When the design activity or vendor of a specific item customarily licenses a distributor to perform the final steps of manufacture exclusively, the Type F code for the distributor may be used (DOD 4100.39, Vol 10 Table 90). 4.14 Metric documents.
When the contract or purchase order specifies the use of the metric system (SI), TDP documents shall be identified as metric documents and conform to FED-STD- 376. 4.15 Digital approval systems. TDP elements subject to approval may use signature or approval indicators. Approval indicators may be applied by a Digital Approval System. Digital Approval Systems shall satisfy the contracting activity requirements for uniqueness, verifiability, and sole control. 5. DETAILED REQUIREMEMENTS. 5.1 General. This section covers the requirements for technical data packages which may include 2D drawings, 2D drawings based on 3D digital models, or standalone 3D digital models and their formats.
5.2 Requirements for 3D TDPs. When 3-dimensional models are required for a production level TDP, the models shall be a complete, accurate, fully defined representation of the item and contain every feature the item being represented is intended to contain. All information necessary to adequately define the item shall be contained in, or associated with, the 3D digital model to include but not limited to dimensions, materials, tolerances, datums, drawing notes, revision data, etc. 5.2.1 2D drawings based on 3D digital models. Data on 2D drawings based on the 3D digital models shall be sourced to the maximum extent possible from the 3D digital model.
There shall be no conflict in data between the 3D digital model and its associated 2D drawing. 5.2.2 Format of 3D TDP. Format of the 3D TDP based models shall be as directed by the contract or purchase order. In general, 3D digital models shall be in accordance with (ISO) 10303 Standard for the Exchange of Product model data (STEP), or in a native 3D CAD format capable of being exported to ISO 10303 STEP format. 13