MIL-STD-31000B - DOD Standard Practice Technical Data PackagesReference2018
This standard defines the requirements for a technical data package (TDP) and its related TDP data management products. The purpose of the TDP is to provide an authoritative technical description of an item which is clear, complete and accurate, and in a form and format adequate for its intended use. A TDP contains elements, is described by a level and type, and may have associated metadata and supplementary technical data. A TDP is a sub-set of product and technical data.
A 2-Dimensional Technical Data Package is based on 2 dimensional engineering drawings. 2D engineering drawings can be manually generated, or generated in a digital form.
A 3-dimensional viewable representation of an item provided in a widely available software format (e.g. ISO 32000-1 Portable Document Format (PDF)). This representation details the complete technical description of the required design configuration to include but not limited to geometry, topology, relationships, tolerances, attributes, metadata and other features necessary to define a component or assembly.
A 3-Dimensional Technical Data Package based on computer based 3-dimensional models that are capable of generating, when required, 2D engineering drawings. Type 3D TDPs shall consist of one of the following type subsets: 3D digital models only, 3D digital models with associated 2D drawings.
3Di format
The standard arrangement and organization of information within a 3Di viewable representation of an item. This includes such features as the size and arrangement of information blocks (e.g. title blocks), notes, lists, revision information, view states, restriction notices and the use of optional or supplemental blocks (see related term Drawing Format).
Annotation Orientation
An annotation orientation refers to the plane or the parallel plane in which the annotation lies, the viewing direction and the right direction or text rotation. One should maintain text orientation in a view that provides consistency for viewing. The orientation of the annotation plane should be maintained relative to the model geometry as the model is manipulated in 3D to comply with ASME Y14.41 section 5.2.3.
Associated List
A tabulation of engineering information pertaining to an item depicted on an engineering drawing or by a set of drawings, e.g., application list, data list, index list, parts list, and wire list.
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A dimension, tolerance, note, text, or symbol required to complete the product definition or feature of the product that is not visible but available upon interrogation of the model.
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Authoritative Technical Data
A set of technical data which has been released and validated as adequate and complete for its intended purpose.
Commercial Drawing
Is prepared by a commercial design activity, in accordance with that activitys documentation standards and practices, to support the development and manufacture of a commercially developed product.
Company Standard
A document produced by a company that establishes engineering and technical limitations and applications for items, materials, processes, methods, designs, and engineering practices unique to that particular company.
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Use of computer software to control and manage manufacturing processes, such as automatically coordinated operations of conveyor systems, cutting and forming machines, and riveting and welding machines.
Conceptual Design Data
Engineering design data which describe the engineering concepts on which a proposed technology or design approach is based.
A process that is the only known manufacturing method that will result in the production of an acceptable item.
Current Design Activity
The design activity currently responsible for the design of an item. This may be the original design activity or a design activity to which the design responsibility has been transferred.
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Data Item Description
A completed document that defines the data required of a contractor. The document specifically defines the data content, format, and intended use. (MIL-STD-963)
Data duplicated or extracted from the original. A copy of a derivative is also a derivative.
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Derivative Technical Data
A set of technical data generated from master technical data. Typically derivative technical data is created to change its format to suit a different purpose. For example converting master, native format data to neutral or viewable data (e.g. STEP, PDF, etc.) so as to allow it to be read by a wider range of software applications. Changes to derivative technical data originate on the master technical dataset.
Developmental Design Data
Engineering design data which describe the physical and/or performance characteristics of a specific design approach to the extent necessary to permit the analytical evaluation of the ability of the design approach to meet specified requirements and enable the development, manufacture and testing of prototype or experimental material.
Engineering Design Data
Engineering drawings, 3Di viewables, native CAD models, neutral CAD models or a combination of these, which define an item by means of graphic and textual presentations, the physical and/or functional requirements of an item, sufficient to fulfill its TDP element and level requirements. Engineering design data comes in three levels corresponding to its TDP level requirements.
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A physical portion of a part (such as a surface, pin outside diameter, hole, or slot) or its representation on drawings, models, or digital data files.
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Finite Element Method
A numerical technique for finding approximate solutions to systems of partial differential equations. FEM is applied to calculations of stress, strain, and deflection, temperature distribution and heat transfer, electromagnetic and similar problems. FEM, also called finite element analysis (FEA), is characterized by the subdivision of solid objects into tetrahedral or hexahedral finite elements. Thin-walled objects may be approximated by two-dimensional shell elements having three or four sides.
Fully Annotated Model
A model that includes every basic dimension and tolerance value necessary to produce the part by visual inspection of the annotated model alone. Also known as a 3D Drawing.
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Geometry consists of the mathematical description of individual part surfaces. Modern CAD systems employ what is called the boundary representation method for describing model geometry. Boundary representations consist of curves, surfaces, edges, and faces. In a valid model, the faces meet at the edges to form a closed volume.
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Lifecycle Data
Lifecycle Data consist of information that describes the state of the part within a controlled procedure for development, review, release for manufacture, retention for maintenance and upgrades, and retirement and disposal. For example, the revision level and release date are lifecycle data that describe the administrative state of the part and change as the product moves through its review and approval cycle. Lifecycle data dont describe properties inherent in the part (such as the material type or manufacturer) that are necessary information to make or procure the part.
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A 3D CAD data set sufficiently defined to provide a visual understanding of the item, but which does not contain full design disclosure. Generally external interface characteristics and features such as weight and center of gravity will be sufficiently defined for the intended purpose. Sometimes referred to as an envelope model, shrink-wrap model or cosmetic model.
A set of technical data which is the controlling source for any subsequent technical data output. All changes to the technical data must originate on the master technical dataset. There can be only one instance of the master technical data which is typically in the native CAD format and maintained by the current design activity.
Master Technical Data
A set of technical data which is the controlling source for any subsequent technical data output. All changes to the technical data must originate on the master technical dataset. There can be only one instance of the master technical data which is typically in the native CAD format and maintained by the current design activity.
Data about data. For example, the file name is meta data about a CAD design held as a file.
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Model-Based Definition
An annotated model and its associated data elements that define the product in a manner that can be used effectively without a drawing graphic sheet.
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A 3D model in the (usually proprietary) format of the CAD system in which it was originally derived or modeled.
Native CAD Data
CAD data as created in its original authoring software format. In general, only the original authoring software format is capable of reading, editing and interpreting native CAD data. (Examples: CREO, CATIA, Autodesk, SolidWorks, etc.) Generally native CAD data is the only format suitable to serve as master technical data. Native CAD data may also serve as authoritative technical data.
Neutral CAD Data
CAD data which is derived from the native format and converted into a format which can be imported into other CAD software. Neutral CAD data is created to a widely available national or international standard (e.g. STEP). In general, neutral CAD data cannot serve as master technical data but may serve as either reference technical data or authoritative technical data.
A standardization document developed by a private sector association, organization or technical society which plans, develops, establishes or coordinates standards, specifications, handbooks or related documents. Company standards are not considered as non-Government standardization documents.
Original Design Activity
The design activity originally responsible for the design and identification of an item whose drawing number and design activity identification is shown in the title block of the drawings and associated documents.
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PDM System
Product Data Management System 
An information system that implements product data management.
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Describes a result that has sufficient decision precision.
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Product Drawing
Two-dimensional (2D) flat orthogonal representations of a 3 dimensional object; used to convey design, manufacturing and quality support information related to how an object is to be built, such as dimensions, tolerances, materials, construction notes and processes. Standardized by ASME Y14.5 and Y14.100.
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A system that manages as-built design information and is the authoritative source for the eBOM, changes, data package, design deviations, and usage.
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Documented requirements, procedures and criteria necessary for demonstrating that products conform to design requirements.
Reference Documents
Documents referred to in a TDP element, which contain information necessary to meet the information content requirements of that TDP element.
Reference Technical Data
A set of technical data which is provided for information, but is not necessarily validated as accurate, adequate and complete.
Supplementary Technical Data
Data related to or in support of a TDP, but not an inherent part of the TDP, which is provided as reference material or is explanatory in nature. For example, supplementary technical data for a particular item could include manufacturing instructions, simulations, work flow data, inspection equipment or procedures (which are not required as an inherent part of the TDP or TDP element), manufacturing machine code, design studies, analysis studies, test results, safety data sheets, etc.
TDP Element
A data product that is an actual component of the TDP. A TDP element provides all or part of the information necessary to define the item being documented by the TDP. All TDP elements taken collectively provide a complete Technical Data Package.
TDP Level
TDP levels provide for a natural progression of a design from its inception to production. A particular TDP level may be ordered to define a conceptual design, a developmental prototype or limited production design, or full scale production of the item by the original design activity or any other capable manufacturer. TDPs consist of one of three Levels: (1) Conceptual Level (2) Developmental Level (3) Production Level
TDP Metadata
Metadata consist of data from and about TDP elements and is used by the procuring activity to manage the TDP development process and to better acquire and support the end product defined by the TDP. When metadata is required, it shall be delivered in accordance with the contract.
TDP Type
TDP type describes the form and format of the technical data and shall consist of one or more of the following types: Type 2D (2-Dimensional (2D) Technical Data Package) or Type 3D (3-Dimensional (3D) Technical Data Package).
Technical Data
Recorded information of scientific or technical nature, regardless of form or character (such as equipment technical manuals and engineering drawings), engineering data, specifications, standards and Data Item Descriptions (DID). Data rights, data delivery, as well as use of any source controlled data as part of this element are included in technical data as are as maintained bills of material and system configuration identified by individual configuration item. Technical data does not include computer software or financial, administrative, cost or pricing, or management data or other information incidental to contract administration.
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Technical Data Package
The authoritative technical description of an item. This technical description supports the acquisition, production, inspection, engineering, and logistics support of the item. The description defines the required design configuration and/or performance requirements, and procedures required to ensure adequacy of item performance. It consists of applicable technical data such as models, engineering design data, associated lists, specifications, standards, performance requirements, quality assurance provisions, software documentation and packaging details.
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A data product that is used to monitor and control the development and maintenance of the TDP. A TDP data management product contains information about the TDP rather than the item being documented.
An index of all documents contained in a technical data package established at a point in time. TDPLs contain a list of all specifications, engineering design data, (i.e. drawings, models, 3Di viewables, etc.), QAPs, inspection documents, packaging documents, or other documents which comprise the TDP listed by nomenclature, document CAGE code, document number, distribution statement, revision, and date.
Type 2D
2-Dimensional Technical Data Package (2D TDP).

A 2D TDP is based on 2 dimensional engineering drawings in accordance with ASME Y14.100 series standards

Type 3D
3-Dimensional (3D) Technical Data Package.

Type 3D will include one or more of the below as specified in the contract and TDP Option Selection Worksheet:

(1) 3D native models.

(2) 2D drawings derived from the 3D native models.

(3) 3Di pdf viewable data derived from the 3D native models.

(4) Neutral files derived from the 3D native models.

An activity that assures that a product satisfies requirements.
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Viewable CAD Data
CAD data which is derived from the native format and converted into a format which can be displayed by a widely available software and for purposes of defining design intent in a human readable format (e.g. 3Di PDF). In general, viewable CAD data cannot serve as master technical data but may serve as either reference or authoritative technical data.
Viewing of 3D models for design reviews, cost estimating by suppliers, and other applications in which the fidelity of appearance but not a high degree of manufacturing accuracy are required. Once data has been translated to a form for visualization, it should no longer be used for manufacturing. Visualization formats include 3D PDF, Siemens PLM Software JT, Parametric Technologys Pro/View and Creo Visualization, and Autodesks DWF. Models used for visualization must look right and the annotations associated with them must be accurate. Visualization models are subject to the least stringent validation criteria because it will not be used for manufacturing or engineering changes.
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