ISO 8538-1999 Aerospace - Nuts hexagonal self-locking with counterbore and captive washer with MJ threads classifications 1100 MPa (at ambient temperature) 235C.pdf

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1、A Numroderfrence ISO8538:1999 (F) NORME INTERNATIONALE ISO 8538 Deuximedition 19990201 Aronautiqueetespacecrous hexagonaux,freinageinterne,avec chambrageetrondellecaptive, filetageMJ,classifications:1100MPa (tempratureambiante)/235C, 1100MPa(tempratureambiante)/315C et1100MPa(temprature ambiante)/42

2、5CDimensions AerospaceNuts,hexagonal,selflocking,withcounterboreandcaptive washer,withMJthreads,classifications:1100MPa(atambient temperature)/235C,1100MPa(atambienttemperature)/315Cand 1100MPa(atambienttemperature)/425CDimensionsISO8538:1999(F) ISO1999 Droitsdereproductionrservs.Saufprescriptiondif

3、frente,aucunepartiedecettepublicationnepeuttrereproduiteniut ilisesousquelque formequecesoitetparaucunprocd,lectroniqueoumcanique,ycomprislaphotocopieetlesmicrofilms,sanslaccordcr itdelditeur. Organisationinternationaledenormalisation Casepostale56 CH1211Genve20 Suisse Internet isoiso.ch ImprimenSui

4、sse ii Avantpropos LISO(Organisationinternationaledenormalisation)estunefdrationmondialedorganismesnationauxde normalisation(comitsmembresdelISO).LlaborationdesNormesinternationalesestengnralconfieaux comitstechniquesdelISO.Chaquecomitmembreintressparunetudealedroitdefairepartieducomit techniquecrce

5、teffet.Lesorganisationsinternationales,gouvernementalesetnongouvernementales,en liaisonaveclISO,participentgalementauxtravaux.LISOcollaboretroitementaveclaCommission lectrotechniqueinternationale(CEI)encequiconcernelanormalisationlectrotechnique. LesNormesinternationalessontrdigesconformmentauxrgles

6、donnesdanslesDirectivesISO/CEI,Partie3. LesprojetsdeNormesinternationalesadoptsparlescomitstechniquessontsoumisauxcomitsmembrespour vote.LeurpublicationcommeNormesinternationalesrequiertlapprobationde75 %aumoinsdescomits membresvotants. LaNormeinternationaleISO8538atlaboreparlecomittechniqueISO/TC20

7、 Aronautiqueetespace, souscomitSC4, lmentsdefixationpourconstructionsarospatiales . Cettedeuximeditionannuleetremplacelapremiredition(ISO8538:1986),dontelleconstitueunervision technique.ISO ISO8538:1999(F) iii Introduction LesdimensionsspcifiesdanslaprsenteNormeinternationaleonttdfiniespourpermettr

8、elaproduction dunepicesatisfaisantauxexigencesdelaspcificationdapprovisionnementISO5858.NORMEINTERNATIONALE ISO ISO8538:1999(F) 1 Aronautiqueetespacecroushexagonaux,freinageinterne, avecchambrageetrondellecaptive,filetageMJ,classifications: 1100MPa(tempratureambiante)/235 C,1100MPa (tempratureambian

9、te)/315 Cet1100MPa(temprature ambiante)/425 CDimensions 1Domainedapplication LaprsenteNormeinternationalespcifielesdimensionsdescroushexagonaux,freinageinterne,avec chambrageetrondellecaptive,filetageMJ,declassifications:1100MPa 1) /235 C 2) , 1100MPa 1) /315 C 2) et 1100MPa 1) /425 C 2) . Laprsente

10、Normeinternationaleestapplicableuniquementllaborationdenormesdeproduitdestinesaux constructionsarospatiales. 2Rfrencesnormatives Lesdocumentsnormatifssuivantscontiennentdesdispositionsqui,parsuitedelarfrencequienestfaite, constituentdesdispositionsvalablespourlaprsenteNormeinternationale.Pourlesrfre

11、ncesdates,les amendementsultrieursoulesrvisionsdecespublicationsnesappliquentpas.Toutefois,lespartiesprenantes auxaccordsfondssurlaprsenteNormeinternationalesontinvitesrechercherlapossibilitdappliquerles ditionslesplusrcentesdesdocumentsnormatifsindiqusciaprs.Pourlesrfrencesnondates,ladernire dition

12、dudocumentnormatifenrfrencesapplique.LesmembresdelISOetdelaCEIpossdentleregistredes Normesinternationalesenvigueur. ISO58552:1988, AronautiqueetespaceFiletageMJPartie2:Dimensionslimitespourvisetcrous. ISO5858:1991, Aronautiqueetespacecrousfreinageinternedontlatempraturemaximaledutilisationest infrie

13、ureougale425CSpcificationdapprovisionnement. ISO8788:1987, AronautiqueetespacelmentsdefixationTolrancesdeformeetdepositiondescrous. 3Configurationetdimensions VoirFigure1etTableau1.Lesdimensionsettolrancessontexprimesenmillimtres.Ellessappliquentaprs revtement(s)desurfaceventuel(s)maisavantlubrifica

14、tionventuelle. _ 1)Correspondlacontrainteminimaleentractionquelcroupeutsupportertempratureambiante,sansrupturenicrique lorsquilestessayavecunevisdeclassedersistancesuprieure. 2)Tempraturemaximalequelcroupeutsupportersansaltrationpermanentedesescaractristiquesoriginelles,aprs retourlatempratureambian

15、te.Latempraturemaximaleestconditionneparletraitementdesurface.ISO8538:1999(F) ISO 2 Lgende 1 Larondelledoitpouvoirtournerlibrementsurlcrou. 2 Dformationdanscettezonepourassurerlefreinage(marquesdoutilsadmisesdanscettezone) 3 Filetage 4 Chanfrein,arrondiouanglecass Lestolrancesdeformeetdepositiondoiv

16、enttreconformescellesprescritesdanslISO8788.Lesdtailsde formenonprcisssontlaisssauchoixdufabricant. a Cesvaleurs,enmicromtres,sontvalablesavantrevtement(s)desurfaceventuel(s).Lesvaleursnesappliquentpas aufiletageniauxpartiesdcoupesdontltatdesurfaceseraceluiobtenuparlesmthodesnormalesdefabrication. b

17、 Valableavantdformation,maislescrousprtslemploidoiventpermettrelutilisationdunecldouillenormalise. c Diamtredelafacedappuidelarondelle d Longueurdeprisedecl Figure1 Tableau1 Codede diamtre Filetage a EFGHJKLMNP min. nom. tol. max. max. min. min. max. min. min. min. 030 MJ3 0,54H6H 4,2 4 6,7 4,6 3,4

18、5,2 3,8 1,2 1,6 040 MJ4 0,74H6H 5,3 5 8,4 6,2 4,4 6,4 4,8 1,5 2,2 050 MJ5 0,84H6H 6,5 6 h12 9,6 7,4 5,5 7,6 5,8 2 2,4 060 MJ6 14H5H 7,6 7 11,1 8,1 6,5 9 6,8 2,3 070 MJ7 14H5H 8,7 8 13,3 9 7,5 11 8 0,6 2,7 2,7 080 MJ8 14H5H 10,9 10 14,6 9,9 8,5 12 9 3,2 100 MJ10 1,254H5H 13,2 12 h13 17,2 12 10,5 14,7

19、 11 3,8 120 MJ12 1,254H5H 15,5 14 21 13,8 12,5 18,5 13 4,5 a ConformelISO58552.Danslazonedefreinageinterne,lestolrancessontvalablesavantdformation . 0,4 3ISO8538:1999(F) ISO ICS49.030.30 Descripteurs:industriearonautique,lmentdefixation,filetageMJ,crou,crouhexagonal,crouavecchambrage,crou autobloquant,classification,spcificationdeforme,dimension. Prixbassur2pages

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