MIL-HDBK-965
3.11 Modernized Parts Control Automated Support System (MPCASS). An on-line automated data processing system that supports the parts management program as defined in this document. The system is available for use by military acquisition activities, prime contractors, subcontractors, and MPCAG personnel. The system is used to process part evaluations and to provide a database of parts being used in a military system or equipment.
3.12 Non-Developmental Item (NDI) . System or equipment with little or no development effort required by the Government on the current contract. This definition does not apply to the part level (see
3.17).
3.13 Non-Government Standard (NGS). A standard or specification developed and maintained by a national consensus standard society or organization.
3.14 Nonstandard part. Any part other than a standard part (see 3.23).
3.15 Off-the-Shelf (OTS). An item developed and produced to military or commercial standards and specifications, available for delivery from an established source, and acquired without change, to satisfy a military requirement. This definition does not apply to the part level (see 3.17).
3.16 Original equipment manufacturer (OEM). The contractor who developed the original design of the system or equipment and produced at least a prototype model.
3.17 Part. One piece, or two or more pieces joined together, which is not normally subject to disassembly without destruction or impairment of intended design use. The categories of parts that are subject to this document are in 6.2 of this document.
3.18 Parts Control Board (PCB). An organization that ensures an efficient parts management operation and timely implementation of parts selection and documentation decisions. The PCB is typically for large programs where several prime contractors, an integrating contractor, and/or many subcontractors will participate in the program.
3.19 Part or Identifying Number (PIN). An alpha-numeric designator which identifies parts, items, or bulk materials that are covered by a specification.
3.20 Program Parts Selection List (PPSL). A list of all parts (both standard and nonstandard) being selected by the contractor(s)/subcontractor(s) for design on a specific contract. The PPSL may also contain parts selected from the GFB. The PPSL is a tool to indicate standardization activity evaluations and to verify compliance with contract requirements.
3.21 Proliferation. Parts which have various characteristics, nomenclatures, or any other means to differentiate between variations of the same part.
3.22 Replacement part. A part other than that specified on a parts list. Types of replacement parts are in 3.22.1 and 3.22.2.
3.22.1 Alternate part. A part that is equal to or better than the part specified on a parts list. These may be: (1) parts listed in a specification or standard as superseding parts; (2) upgraded or better than parts (such as JANTX in place of JAN, Standard Microcircuit Drawing parts in place of vendor unscreened parts, military temperature range parts in place of commercial temperature range parts); or (3) equivalent or interchangeable parts that are functionally, mechanically, and of the same quality as the specified parts, such as from a different vendor.
3.22.2 Substitute part. A part whose performance may be less capable than the part specified on a parts list for one or more reasons (i.e., quality or reliability level, tolerance, parametrics, temperature range, etc.).
3.23 Standard part. A part widely used, as determined by the MPCAG in the categories in 6.2. Alternatively, the SOW may define which parts are standard for the contract, equipment, or system.
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