1、_. . . 1 .-i!- I -DOD-STD-ZIOIIOS)10MAY 1979SUPERSEDIH6pm PAM II, Plw6RAi 2MILITARY STANDARDCLASSIFICATIONOF CHARACTERISTICSProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-mD-STm2101(CS)10Msy 1979DEPAlUl7iOF DEFTNSEWashington,D2 20301Classificitiooof
2、 CharacteristicsCCID-SII3-2101(0s)1. hisMilitaxyStandardisapprovedby tk NavalSea SystsmsCnmond,D+artherefore,itmaynotk cxxteffectim in all instances).ThisMilitaryStandard waspre-pared“toestablisha uniformmtkdolqyfortheprocessofclassifyingandannotatingthosecharacteristicsdesmxlessentialto the govemmn
3、t acceptanceof prcducts. metma?uknsdscqeof annotationclarifierswasnscessaryto a te severalconflictingndlcds.The “Classificationof Characteristics”terminologyof MIL+TC-490Masselectedover the “Classificationof lkfects”terminologyof M?-STD-961as king mre descriptiveof theprocessdefinedherein. In thismn
4、tsxtcharacteristicsareclassifiedfora varietyof reasons,incltii.ngpreassit of ineim priorities,whiledefectsareclassifiedpr-ily fordeterminationof approvalauthorityon waiversanddeviations.WhilethetermsareusedinterchangeablyandretxgnizsdU3Dand industrywideas king thesaw, theterm“ClassificationofCharact
5、eristics”is mnsideredtobemre suitableforthatprcxessrfo g thedlpt of scificati.onsandpri=telydevel+ei: : :.:Iten,stcck . . . . . . . . . . . . . . .Repairitm. . . . . . . . . . . . . . . . . . . .tsanalysis. . . . . . . . . . . . . . .%mngplan,standalfl. . . . . . . . . . . . . .qlingplal, special .
6、. . . . . . . . . . . . .GmEmLm . . . . . . . . . . . . . . .tksi activityrsqonsibility . . . . . . . . . .Analysisprocedureardadministration. . . . . . .DEAIIM3RECUIRJMNIS. . . . . . . . . . . . . . .RqUimmntsofcxs. . . . . . . . . . . . . . . .Formatforprcductdescritedtyqx2cifications . .Fonmt for
7、prduct describedby drawings . . . . .11112233333333333444444:44,4445555566 ,.67777ivProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I U3D-STD-2101()10Msy 1979s$!E!5.45.55.65.75.85.95:105.1110.10.110.220.30.40.40.150.50.150.1.150.1.1.150.1.250.1.2.150
8、.1.2.250.1.2.350.1.350.1.3.150.250.2.150.2.1.150.2.1.250.2.1.350.2.1.4Annotation . . . . . . . . . . . . . . . . . . . .Classificationc: : : : : : : : : : : : : : : :APPENDIXCEWMPLSS OF CTASSIFICATIlCX3DESGENERAL. . . . . . . . . . . . . .: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9、Application. . . . . . . . . . . . . . . . . . . .DXWE2WS (NotapplicaMe) . . . . . . .DEFINITKYNS. . . . . . . . . .GENERA”WIDANQ? IMX3R$?ATICN.m= . . . . . . . . . . . .DETFitLEDW33MFKTZF thatis,theorganizaucnrespon-siblefor,preparirqdrawings,specificationsand standards.iheocumentarepresentqlforpur
10、gxxesof techniti”lapdices to thisdguidance.1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I ID3D-STD-21O1(G)10May 19792. RmERmCmlxxmmms2.1 Issuesof docmx?nts.The followingdamats of the issueineffecton dateof invitationforbidsor requestforprqosal fo
11、rmapartof thisstandardto theextentspecifiedhereti.SPIZIFICATICNSFULITAPXIMC-P1OOO -mL-s-83490 STANDARDsMILITARYMIL-STD-1OO -MIL-STW105 -MIL-.5ZD-1O9-mL-S71b414 -MIL-E?I12-490MIL-SI!C-961-MCL+ID-I.235-HANDBmKsMILITARYMIL-KDBK-53 -MIL-KDBK-106PmrtiK-107 -Dratigs, Ehginesri.rgSifications, -sandAssociat
12、edListsandFormEngineeringDrawingSaing ProceduresAttributesPractiossandTablesforInspectionbyality Assurancelthebasisforclassificationof characteristics.3.1.8 Rsign activity. The activity(ies)ororganizatim(s)withintheactivityresponsiblefortheestablishmentof technicalrequimmmts(e.g.,drawings,specificat
13、ions,standards,etc.) and forprescribinginspz-dion,testingor otherqualityrequirements.3:1.9 Inspxtion by characteristics.Applicationof SFXXifisdinspc-tionSan.ng parameters(e.g.,AQL)to eachclassifiedcharacteristicindividually.3.1.10 Lrqectionby class1 Applicationof a aFcifiedsanplingplanindex(e.g.,AQL
14、,Rx)to a ClassifidcategDry(Critical,MajororMinor)or to a selectedsetof characteristicswithjnoneof thosed=gories ratherthanto eachcharacteristicimlividually.l 3.1.11Itsm. Arly, s0bdss611bly,ZIStily, Systi Or otherdeviidentifiedby a draw- or specification.31.12 Itan,cunrercial.An itemdesignedforan ava
15、ilableforpurchaseOn theccmnarcialmrket”and is includsdin item,privatelydeveloped.3.1.13 Itsm,end. An itemin the assembledor cmpleted stateatwhicht pt -S place.,31.14Itm; minorhardware. An itemSusceptfileto simplecorrectionor openstcckreplacemnt, or an itm onwhichall inspsctim character-isticsareuncl
16、assifiedor minor.3.1.15 Item,privatelydelqd. h itemcmpletelydevelopd atprivateexpnse andofferedto theCovermmt as a prcxiuctionarticle,withcclv t controlof thearticlescmf igurationnormallylimitsdto itsform,fitand function(inchxlesccmmricalitms).4Provided by IHSNot for ResaleNo reproduction or network
17、ing permitted without license from IHS-,-,-mi3+m3-2101(C6)10May 1979.3.1.16 Itsm, stcck. An off-the-shelfitm identifiedas anlllduetrystaIdardItm (sAS,AISI,etc.) or t StandaxdItem(MS,FS,AN, etc.)”.3.1.17,Repairitem. Any individualpart,subassemblyor assmblyrqir forthemM=ename or rqair of an end item.3
18、.1.18”Requrmmts analysis.fhgineeringanalysisof d require-sd qon a deviceby itsdesignmission;a perquisite forclassificationof characteristics.3.1.19 saning Plan,standard.A sanplingplandescrikedinMIL-.STD-105,MIL-S17J-414,MIL-STD-1235or otherapplicablemilitarystandard,militaryspecification,goverment d
19、irectiveor gwerrmmtinstruction.A standardsanplingplanmn bs specifid by referenceI or citationof a sanctionedgoverrmnt sourcedoctnrent.3.1.20 Saling plan,special.Any Saing planotherthanastandardSalTplinqplan. A speciallina plancannotk soecifiedbvreferenceandtit- mimr whencoverd by higherassemblylevel
20、inspectionor test.tksignatesa criticalcharacteristicthatis classifiedonlyLecauseof effecton missionperformance,and thereforehasno effecton safety.Cesiqnatesa criticalcharacteristicthathasxmtiallyhazakous or unsafecrediticnsfor imlividuals-duringtltheyAtiiibutesarecharacter-aredistinctfrunvariablesI1
21、2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-l.I ,. mo-sTo-2101(osI10May 1979 “-”,. ,DI A (ntrd) .whicharecharacteristicsmasured on a scale. Atbutes, andmaterialprties my influmce 9ualitywithresct to my.pr allof theCLm.5criteria. !.%sdesignengine
22、ershmld indicatehutmaterialselectim anddesignattributeswerechosento respnd to tbs.missim requts.b. Howmustthe itembe prcceseed,fabricatsd,assembledand.testsd?Inadditionto observableprqxmties,theprocessinghistmy of a devicecan influencyitsWality to anyor allof theCImS criteria.Thiscanmcu.rin severalw
23、ays. Manufacturingpsses canaffeetmaterialpropertiesinwaysnot readilyobservable hydrogenenbrittlem?ntofheattreatedmtals isan exanple. Fabricationactivitiessuchasmachiningaresquallyinfluential.Stressappliedduringtestingmayinducecumulativeirreversibledamage_ssible to detectby nonde-structivemans. The q
24、ualityassuranceengineerskncwlsrlgeof shoppracticesmd capabilitiesisessentialat thisstepof hardwareanalysis.c. What tolerancesare rtant to an acceptablefitof thedevicewithmtirq itms in higherassembly? Definitionof kterface rquire-mnts is a systenenqineerinqtask. Theserequimmmts areusuallypasseddcwn f
25、ran tie to lmrerlevel,devices,butmy requiresynthesisor verificationby analysis.Att hisnt, theanalystsare linking“outward”.frunthedeviceunderstudyexaminingrirts inplsedonitby the largersystm. Oftenthetrueor actualtolerances“-Aon a deviceby the higherlevelasserblywillbediffimlt or impassibletodetsmn.i
26、nety analysis. Itmy be necessarytowaitfortestdatatorelve suchguestionsor itmay be necessaryto sp2cifya “safe”toler-anceknowntote conservative.Interfacerequirementsareoftencharac-terizedin termsof “fionn,fitand function,” theymy includedimmions,wsiqht, reguirsmmts (voltage,frequency,phase), sFcificat
27、ionof requiredinputs,andunilateral,bilateralor statisticaltoleranceson allof these.d. ihattolerancesmustconstituteelcmmts Ht forproperfunctioningof thedeviceandfor interchangeabilityo.freplaceablepartswithinit? The analystmst alsolcok“inward”toevaluate=9uir-nts inqmssdby functionsof theitemunderstud
28、yon itslowerlevelelsmmts.Tolerancesmy applyto dimmsions,electricalormchanical paramters or otherparmeters suchas tim to performcertainfunctions.lWsrancesmy be unilateral(+.001- .000),bilateral(t.001)or statistiml. Statisticaltolerancescank statedin term of variance,standarderror,man *solute error,ci
29、rmlar, sphericalor elipticalprobableerror,FW error,or a varietyof otherfores. Surfacefinishexpressedinmicro-inchesPM is an exampleof a statisticaltoleran=.e. What is the itms designlifeandwhatcharacteristicsdeter-minethe life? War, corrosion,fatigue,R* stresses,parter drift,mntamination,responseto i
30、onizinqradiationandageeffactssuchasdepolymrizationare-g themanyfactorsthatmy influenceservicelife. The presenceof somanycontendingprccesses,ccupledwiththedifficultyof identifyingwhichprcxesslimitsthelifeof a givendevice,my indimte theneedforpartipationby materialsscialists13Provided by IHSNot for Re
31、saleNo reproduction or networking permitted without license from IHS-,-,-,.mD-Sm-2101(C10May 1979APPZNDIXA (CbntId)in theanalysisprccess. If the itm isnotmaintainable,erdof lifecccursn functionalfailure.Thus,reliablelife (tin-efrandeploy-mnt to an arbitraryunsatisfactoryreliability)is thedesignlifep
32、armeter. Peliablelifemy hemuchshxter thanman life. It isestimatedby reliabili analysis.f. Hu#can the itenfail? Partially?Conetely? If ElW2A(FailureW thatis,thehighestlevelsatwhichdefectiveunitscanEedetectedandclassifisxlunmbisl. Butenphasismustbe placed,ontheneedforunambiguousclasstiicaton.Typically
33、a vezymallfractionof thepartsina cmplex devicearefuundtocontrtitemstof thequalityandreliabiliproblem. It ismuchnureefficienttodetestandeliminatethesepartsby impction at lcwasssnblylevelsthantodetectttmminhiherleveltests. -sealon prmursrm.tinfonnationandthetechm.elinformtiorldevelopd indesignanalysis
34、,a deviceshouldgenerallybe selectdas a unitof inspectionif itmeetsoneormre of thefollmingcriteria:a. It is tobeprocuredasanenditemundermntract.b. It is tnbeprcxarsdasa repairitemIt isrequiredtobe interchangeableforuseor safety.: Itsperfomce cantedetim.imdonlyunderactualserviceconditions(e.g.,itmustt
35、e testeddestructively).e. It is inaccessibleorcostlyto in-t, repairor replaceafterinstallationina higherassmbly.No devicemeting anyof theforegoingcriteriashould minorwhenreveredimqxxtionor test. Thev suffixmnv situationswheredimensionalwhen. ispmcuredaaa higherassemblylevelshouldhusedtomver thechara
36、cteristicsarevitalatpa levelbecauseinterchangeabilityisrequirsd,lmtareofninorsignificanceafterasscnblyhasken cxnpleted.Iksignatesa criticalcharacteristictit isclassifiedonlybecauseofeffectonmissionformnce, ardtkreforehasnoeffecton safety.Designatesa criticalcharacteristicthathastentiallyhazardousoru
37、nsafeconditionsforindividualsduringtheprocessingof item, butmuld notpresenta safetyhazardinFleetusage.I17Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Ix)B*2101(as)10my 1979APPENDIXBUSE OFNC7TES10. GmSRAL10.1 g. This appmdix prwides informationon s
38、txudardarri.nonstandardnoteswhichmy be usedon drawingsand sifications. “”10.2 Application.Thisapdix is presentedforthepurpse oftechnicalquidancein usinqnotesas applicableintiawingsandscificatonswhichspeqiy20.30.40.classifieiicharacteristics.REFERsNcsnDxuMmrsNetapplicable.D12TNITICNSseesection3 of th
39、ebasicstandard.=- DANG. INRWMATICN40.1 Furpse. Thisappendixpresentsexanplesof standardndes anddescribesnonstandardnoteswhichmy be usedduringclassificationofcharacteristics.50. DEXAILEDGUIDAWS INFWommml50.1 Standardnotes. The follc.wingstandardnotesmy be usedas.applicablem drawingsand specificationsw
40、hichspecifyclassifiedcharacteristics.a.b.c.d.Classificationof characteristics.ThisC of C coversqualityreWlrwts whichaffeetccordtiation,life,interchangeability,function,and safety.Saing standard. Sairg prccdures shalltier whencoveredby.higkr levelinspectionOr test.F - Designatesa criticalChaI_a-iStiC
41、 thatisclassifiedonlybecauseof effeeton missionperformance,W thereforehasno effeeton safety.L - Designatesa criticalcharacteristicthathaspotentiallyhazamlousor unsafeconditionsfor individualsduringtheprocessingof itms, buttmuldnotpresenta safetyhazardinFleetusage.50.2 Nonstandardnotes. A varietyof n
42、onstandardnotesmy te necessarytoexpla”mC of C requirenrmtsor conveyC of C information.Theyshouldbe ussdliterally. Ingeneral,a noteisneededwheneverthe suffixE isW-W one or mre m. In addition,notesmy k usedtodescrib?reWm s=ti:n m=, inm conditions,specialfils orgages,lot formtmn requimnmts Otherinspect
43、ionor testrequirts.I19Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EQD-STC-21O1(0s)1014sy1979APPlliDIXCEX?!MPLWOF CL.%SSIPICATIC13DES10GfNERAL10.1 . Thisappendixprovidesexanplesof the classificationcedes* appliedto varioust.s of characteristicson
44、spcificationsand”drawings.10.2 Application.This appmdix “ispresentedfor thepurpaseoftechnicalcjuidancein illustratingtheuseandapplicationof theclassificationties. The eianplesarenot intendedtolevelof classificationof a particularcharacteristic.hdicate the20. P.mERmCEDECUmNISNot a-pplicable.30. DEFIN
45、ITIONSSeesection3 of40. GENERALGUIDAWEthebasicstandard,INFWU4ATIDN40.1 Furpse. Thisappendixpresentsexanes of ths alicationofclassificationu=desto dimmsional characteristics,notes,and tospecificatim characteristics.50. DEX?WLEDGUIIM.NCSINEYIP.J!ATIl50.1 Dimmsioml characteristics.The follfig exmples i
46、llustratetheapplicationof classifimtion es tod-sional characteristics.752.748a.752.748(CIP) +.000or .750i .002(CIP)or .752 (CIP)-.004l.laximnnandminimnnclassifiedcritid. iresverificationriorto assmbly.(M.lol) +.000or .750t .002(MIOl)or .752 (Mlol)-.00420Provided by IHSNot for ResaleNo reproduction o
47、r networking permitted without license from IHS-,-,-.IL13D-srD-2101(OS)10May 1979.APPENDIXC (Centd)b. i%ximnnaodminti classifiedmajor.752(+Cl) +.000.748 or .750t002(+Cl)or .752 (+Cl)-.004c. MAnnnn cl.assifiedcritical.752(-MI.OIV) +.000.748 or .750t .002(-14101v)or .752 (-Mlolv)-.004d. Minirmnclassif
48、iedmajorwhenpartisped as separateenditxn;-r whenpromred as partof higherassembly.752(+cl) (iCl) +.000 (+Cl)or .750* .002 or .752.748(-1.llol) (-illol) -.004 (-1.llol)e. Maxti classifiedcritical- Minimumclassifid mjor.50.2 titSS. The applicationof classificationcedesto notesaredcmmstri.n the followingexaes.(MIOIP) Eothsidesof thewindm+,itsmq , shallbe freefrcmprimr, paint,or foreignmaterialsand franscratches,cracks,or chipsthatwld rduce visualobsemation.a. All characteristicsinnoteclassifiedmajor. m kverifiedpriorto assembly.(201D) Material: St
