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    ARMY MIL-HDBK-505-1998 DEFINITIONS OF ITEM LEVELS ITEM EXCHANGEABILITY MODELS AND RELATED TERMS《模型及相关术语 项目可兑换定义的项目水平》.pdf

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    ARMY MIL-HDBK-505-1998 DEFINITIONS OF ITEM LEVELS ITEM EXCHANGEABILITY MODELS AND RELATED TERMS《模型及相关术语 项目可兑换定义的项目水平》.pdf

    1、NOTE: MIL-STD-280A has beenredesignatedas a handbook, and is to be used for guidancepurposes only. This document is no longer to becited as a requirement. For administrativeexpediency, the only physical change fromMIL-STD-280A is this cover page. However, thisdocument is no longer to be cited as a r

    2、equirement.If cited as a requirement, contractors may disregardthe requirements of this document and interpret itscontents only as guidance.EEFlMIL-HDBK-50512 FEB RUARY 1998DEPARTMENT OF DEFENSEHANDBOOK FORDEFINITIONS OF ITEM LEVELS, ITEMEXCHANGEABILITY, MODELS, AND RELATEDTERMSAMSC N/A AREA MISCCop

    3、yright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-iL-STD 280AJuly 1969DEPARTMENT OF DEFENSE- Wosh;ngton, D. C. 20301Definitims of Item Levels,Item Excbility, Models, ond Reloted TermsM

    4、IL-STD-280A1. This Mil ltory Stondord is monc Militaryequipment.Iication. - These terms and their definitions herein we to be used, as!“2 -applicable, m t research, development, procurement production, testing,evaluation, distribution, operation, maintenance, “storage, and disposal of ecip-ment, and

    5、 the documents pertinent thereto. It is not intended that the definitionscontained in this standard shall conflict with the definitions for specific items ofsupply contained in Cataloging Handbook M-l Federal Item Identification Guidesfor Supply Cataloging.2. REFERENCED DOCUMENTS(not applicable)3. D

    6、EFINITIONS3.1 tern levels. - Item levels (as defined below) from the simrhst division tothe mare complex are as follows:.PartSubassemblyand (2) is capable ofbeing exchanged for the other item (a) without selection for fit or porformonce, and(b) without alteration of the items thmdvos or of aoining i

    7、tems, except foraustment.3.2.2 Replacement Item. - One which is interchangeable with another item,but which differs physically from the orignal item in that the installation of thereplacement item requires operations such as dri 11ing, reaming, cutting, fi I ing,shimming, a71tc., in addition to the

    8、normal applicatim and methods of attachnwnt.3.2.3 Substitute item .- On. which psesses such functional and physicalCharacteristics 08 to bo Capabl a71 of beingexchangedfor anotheronly under specifiedconditions or in particular applications and without alteration of the items themselvesor of aqoining

    9、 items.3.3 Models (devolopm ont and produ ction). -3.3.1 Exploratory devolopmen t.- An item (prolimi parts or circuits) us-for a71xperimentqtion or tests to investlgote or waluate the feasibility and practicality ofo concept, igs, fixtures and methods. It employs standard ports (or non-standard part

    10、s approved by the agency concerned).3.4 Other related terms .-3.4.1 Accessory. - An item used in conjunction with or to supplement anassembiy, unit or set, contributing to the a71ffectiveness thereof without a71xtendingor varying the ksic function of the assembly, unit, or set. An accessory may beus

    11、ed fw testing, adiusting or wliting purposes. (Examples: Recording camerafor rodar set, emergency power supply. )3.4.2 Attachment. - h item used for physical connection to an assembly,unit, or set, contribu ting to the effectiveness thereof by extending or varying thebasic function of the assembi y,

    12、 unit, or set. (Exampl-: Hoisting-attach%nt ona truck, miiiing attachment for a lathe. )3.4.3 item. - A nonpecific term used to denote any product, inciudingsystems, mater la s, parts, subassembly k, sets, accessories, etc.4Copyright Communications - Electronics Command Provided by IHS under license

    13、 with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.+- -4. GENERAL STATEMENTS(not applicable)5. DETAIL STATEMENTS(not applicable)6. NOTESMIL-STD-280A7 July 19694.1 Supersession dota. - This standard also superdes MlL-STD-l 00 for thedefinitions of accessory,

    14、 attachment, group, item, part, set, subassembly, systeyn .(genard), system (electrical-dectronic), and unit; ond MIL-STD-721 for the definitions of interchable, replac 10, and wbstitute items.Custodians:Army - ELNavy - ASAir Forco -26Rwiew Activities:Army - GL, Ml,=, MU, WCNavy - OS, SH, KAir Faco

    15、-22 , 17Dofcnse Supply ncy - OH, iPFAAPreparing Activl.Army - EL(Proiect MISC-0361 )User Activities:Amy - ATik.Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANOARDWATtOU ENT I

    16、MPROVEMENT PROP06AL*lmwu!dam - Rfme S&)DOCWNT u-n la NT TrrLaINAMCOF a71U9MITTW0 -ANIMATION 4. TvPC OF ORANIZATION (M- ome) 1VCNOORb.e.nocommondod Wffdh,:motiondo foc Rooomnmndotbn:REMARKSCopyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-


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