EN 3005:2003
(Main)Aerospace series - Nuts, self-locking, in heat resisting nickel base alloy NI-P101HT (Waspaloy) - Classification: 1210 MPa/730 °C - Technical specification -
Aerospace series - Nuts, self-locking, in heat resisting nickel base alloy NI-P101HT (Waspaloy) - Classification: 1210 MPa/730 °C - Technical specification -
This standard specifies the technical; qualification and quality assurance requirements for self locking.nuts in material NI-PlOl-HT(Waspaloy) of tensile strength class 1210 MPa. at room temperature, maximum test temperature of material 730 °C.
Primarily for Aerospace applications it is applicable to such self locking nuts when referenced on the product standard or drawing.
MUTTERN,SELBSTSICHERND,AUS HOCHWARMFESTEM NICKELBASISLEGIERUNG NI-P101HT <WASPALOY> - KLASSE 1210 MPA/730 GRADEN C -- TECHNISCHE LIEFERBEDINGUNGEN
ECROUS,AUTO-FREINANT,EN ALLIAGE RESISTANT A CHAUD A BASE DE NICKEL NI-P101HT <WASPALOY> - CLASSIFICATION 1210 MPA/730 DEGRES C
Aerospace series - Nuts, self-locking, in heat resisting nickel base alloy NI-P101HT (Waspaloy) - Classification: 1210 MPa/730 °C - Technical specification -
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Nuts, self-locking, in heat resisting nickel base alloy NI-P101HT (Waspaloy) - Classification: 1210 MPa/730 °C - Technical specification -MUTTERN,SELBSTSICHERND,AUS HOCHWARMFESTEM NICKELBASISLEGIERUNG NI-P101HT - KLASSE 1210 MPA/730 GRADEN C -- TECHNISCHE LIEFERBEDINGUNGENECROUS,AUTO-FREINANT,EN ALLIAGE RESISTANT A CHAUD A BASE DE NICKEL NI-P101HT - CLASSIFICATION 1210 MPA/730 DEGRES CAerospace series - Nuts, self-locking, in heat resisting nickel base alloy NI-P101HT (Waspaloy) - Classification: 1210 MPa/730 °C - Technical specification -49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 3005:2003SIST EN 3005:2004en01-maj-2004SIST EN 3005:2004SLOVENSKI
STANDARD
SIST EN 3005:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3005January 2003ICS 49.030.30English versionAerospace series - Nuts, self-locking, in heat resisting nickelbase alloy NI-P101HT (Waspaloy) - Classification: 1210MPa/730°C - Technical specificationThis European Standard was approved by CEN on 24 June 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3005:2003 ESIST EN 3005:2004
EN 3005:2003 (E)2ContentspageForeword.31Scope and field of application.42References.43Definitions.54Certification and quality assurance.74.1Qualification.74.1.1Purpose.74.1.2Conditions.74.1.3Qualification test requirements and procedures.74.1.4Qualified manufacturers.74.2Acceptance.84.2.1Purpose.84.2.2Conditions.84.3Quality system certification.84.3.1Purpose.84.3.2Requirements and procedure.84.4Responsibility for inspection and tests.84.5Inspection and test report.85Table.9SIST EN 3005:2004
EN 3005:2003 (E)3ForewordThis document (EN 3005:2003) has been prepared by the European Association of Aerospace Manufacturers –Standardization (AECMA-STAN).After enquiries and votes carried out in accordance with the rules of this Association, this Standard has receivedthe approval of the National Associations and the Official Services of the member countries of AECMA, prior to itspresentation to CEN.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by July 2003, and conflicting national standards shall be withdrawn at the latest byJuly 2003.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 3005:2004
EN 3005:2003 (E)41 Scope and field of applicationThis standard specifies the technical; qualification and quality assurance requirements for self locking.nuts inmaterial NI-PlOl-HT(Waspaloy) of tensile strength class 1210 MPa. at room temperature, maximum testtemperature of material 730 °C.Primarily for Aerospace applications it is applicable to such self locking nuts when referenced on the productstandard or drawing.2 ReferencesISO 2859-1Sampling procedures for inspection by attributes – Part 1: Sampling schemes indexed byacceptance quality limit (AQL) for lot-by-lot inspectionISO 3452Non destructive testing – Penetrant inspection – General principlesISO 3453Non destructive testing – Liquid penetrant inspection – Means of verificationISO 3534Statistics – Vocabulary and symbolsISO 8642Aerospace – Self-locking nuts with maximum operating temperature greater than 425 °C – TestmethodsISO 9002Quality systems – Model for quality assurance in production, installation and servicingEN 2002-8Aerospace series – Metallic materials – Test methods – Part 8: Micrographic determination ofgrain size 1)EN 2959Aerospace series – Heat resisting alloy NI-PH1302 (NiCr20Co13Mo4Ti3Al) – Solution treatedand cold worked – Bar for forged fasteners – 3 mm £ D £ 30 mm 1)EN 2960Aerospace series – Heat resisting nickel base alloy (Ni-P101HT) – Cold worked and solutiontreated – Bar for machining for fasteners – 3 mm £ D £ 50 mm 1)EN 3039Aerospace series – Propulsion standard parts – Quality assurance 2)EN 3041Aerospace series – Method change approval for qualified parts – Technical specification 2)EN 3042Aerospace series – Quality assurance – EN aerospace products – Qualification procedure.EN 3220Aerospace series – Heat resisting nickel base alloy (Ni-P101HT) – Cold worked and softened –Bar and wire for continuous forging or extrusion for fasteners – 3 mm £ D £ 30 mm 1)TR 3040-1Aerospace series – Quality assurance – EN aerospace products – List of approvedmanufacturers 3)
1)Published as AECMA Prestandard at the date of publication of this standard2)In preparation at the date of publication of this standard3)Published as AECMA Technical Report at the date of publication of this standardSIST EN 3005:2004
EN 3005:2003 (E)53 Definitions.3.1Production batchQuantity of finished nuts fabricated by the same process from a single material cast(single heat of alloy),having thesame basic part number and diameter, heat treated together to the same specified condition and produced as on~continuous run.3.2Inspection lotConsists of nuts from a single production batch of the same part number which completely defines the nut.3.3Discontinuities.3.3.1CrackRupture in the material which may extend in any direction and which may be intercrystalline or transcrystalline incharacter.3.3.2SeamLongitudinal surface defect in the form of an unwelded open fold in the material.3.3.3LapSurface defect caused by folding over metal fins or sharp corners and then rolling or forging them into the surface3.3.4InclusionNon-metallic particles originating from the material making process. They may exist as discrete particles or stringsof particles extending longitudinally3.4Test temperatureAmbient temperature. unless otherwise specified.3.5Simple random sampling 1)The taking of n items from a population of N items in such a way that all possible combinations of n items have thesame probability of being chosen.3.6Critical defect 1)A defect that according to judgement and experience. is likely to result in hazardous or unsafe conditions forindividuals using. maintaining. or depending upon the considered product. or that is likely to prevent performance ofthe function of a major end item.3.7Major defect 1)A defect other than critical. that is likely to result in a failure or to reduce materially the useability of the consideredproduct for its intended purpose.3.8Minor defect 1)A defect that is not likely to reduce materially the useability of the considered product for its intended purpose, orthat is a departure from established specification having little bearing on the effective use or operation of thisproduct.3.9Sampling plan 1)A plan according to which one or more samples are taken in order to obtain information and possibly to reach adecision.SIST EN 3005:2004
EN 3005:2003 (E)63.10Limiting quality LQlO 1)In a sampling plan, a quality level which corresponds to a specified and relatively low probability of acceptance -inthis case 10 percent probability of acceptance. It is the limiting lot quality characteristic that a lot of this qualitywould occur.When expressed as a per cent defective, it may be referred to as a lot tolerance percent defective3.11Acceptable quality level 1)A quality level which in a sampling plan Corresponds to a specified but relatively high probability of acceptanceIt is the maximum per cent defective (or the maximum number of defects per hundred units) that, for purposes ofsampling inspection, can be considered satisfactory as a process average.3.12Finished nutA nut ready for use. inclusive of any possible treatments and/or surface coatings. as specified in the productstandard or drawing.3.13DrawingDocument specifying all the requirements for nuts i.e.- metallurgical- geometrical.and dimensional- functional (strength and temperature classes).3.14Self-locking torqueThe torque to be applied to the nut or bolt to maintain movement of rotation in relation to the associated part, theassembly being under no axial load and the nut locking system being completely engaged with the bolt(two pitchesminimum protrusion including end chamfer).3.15Seating torqueThe tightening torque to be applied to the nut or bolt to introduce or to increase the axial load in the assembly.3.16Unseating torqueThe untightening torque to be applied to the nut or bolt to reduce or remove the axial load in the assembly.3.17Breakaway torqueThe torque required to start unscrewing the nut or bolt with respect to the associated part, with the nut lockingdevice still fully engaged on the bolt, but after the axial load in the assembly has been removed by unscrewing halfa turn followed by a halt in rotational movement.3.18Wrench torqueThe tightening and untightening torques which the driving feature qf the nut shall withstand, repeatedly, without anypermanent deformation which would prevent the appropriate wrench from being used and preclude reuse of thenut.1) Definition taken in ISO 3534-1977(in course of revision within lSO/TC69).SIST EN 3005:2004
EN 3005:2003 (E)74 Certification and quality assurance.The allocation of tests' corresponding to the requirements of this standard is as follows:4.1 Qualification4.1.1 PurposeThe purpose of qualification tests is to ensure that the nut design and nut manufacturing conditions allow the nut tocomply with the requirements of this standard.4.1.2 ConditionsThe qualification tests summarised in table 3 shall be perf ormed on each type and diameter of nut. Proposedchanges in manufacturing source or procedure shall be subject to the requirements of EN 304146 nuts selected from a single inspection lot by simple random sampling shall be subjected to the qualificationtests.The number of nuts to be subjected to each test as well as the method(s) to be used are specified in table 1The tests to be applied to each nut are shown in table 2The test programme may possibly be reduced. this decision will be based on the comparison of results obtainedfrom parts of similar design. size and manufacturing conditions.All or part of these tests may also be performed for production acceptance, when a reinforced inspection seems tobe necessary, or to survey nuts that have not proved satisfactory in use.In that case, the sample to be subjected to these tests is the same as that used for the Qualification inspection andtests.4.1.3 Qualification test requirements and procedures.The qualification test requirements and procedures shall be to the requirements of EN 3042.4.1.4 Qualified manufacturersA list of qualified manufacturers for specific standard parts is listed in CN/TR 3040.SIST EN 3005:2004
EN 3005:2003 (E)84.2 Acceptance4.2.1 PurposeThe purpose of acceptance tests is to check, as simply as possible, by a method representative of actual useconditions, with the uncertainty inherant to statistical sampling, that the nuts constituting the batch satisfy therequirements of this standard.4.2.2 ConditionsAcceptance tests are summarised in table 3. They shall be performed on each batch. Table 1 specifies, the testmethod and sampling plan to be used for each test. Nuts from the batch to be tested shall be selected by simplerandom sampling.Each nut may be submitted to several testsThe nuts to be subjected to destructive tests may be those on which non-destructive tests have been performed.4.3 Quality system certification4.3.1 PurposeThe purpose of quality system certification is to ensure that the manufacturer has demonstrated the acceptability ofhis quality system and his ability for continuing production of parts to this standard, to the required level of quality.4.3.2 Requirements and procedureThe requirements and procedures for quality system certification shall be to the requirements of lSO 9002 andEN 3039.4.4 Responsibility for inspection and testsThe manufacturer is responsible for the performance of all inspection and test requirements as specified herein.Each manufacturer will use their own or exceptionally, any other facilities approved in accordance with 4.1 and 4.2for the implementation of these inspection and test requirements.4.5 Inspection and test reportA test report showing actual numerical values shall be provided at the purchaser's option as part of the terms of thepurchase order.SIST EN 3005:2004
EN 3005:2003 (E)95TableTable 1 Technical requirements and test method*Q = Qualification approval requirements (4.1)A = Production acceptance requirements (4.2)ClauseCharacteristicTechnical requirementInspection and test methodQ/ASamplesize5.1MaterialsMaterial NI-P101_ht to specificationprEN 2959;prEN 2960 or prEN3220supplied by an approved source;shall be used for the manufacture ofnuts (or nut elements in the case offloating nuts). The material of the nutcage in the case of floating nuts shallbe as specified by the productstandard or drawing.As stated in the material specification andprEN 2098-065.2Dimensions;tolerances of form& position; threads& qualityQA46tables6 & 75.2.1DimensionsThe dimensions of the finished nutsshall conform to the product standardor drawingAll dimensions shall be controlled by anapproved system of gauging.5.2.2Tolerances of form& positionTolerances of form and position shallconform to the product standard ordrawing.Tolerances of form & position shall becontrolled by an approved system ofgauging.5.2.3ThreadsThreads shall conform to the productstandard or drawing.Threads shall be gauged by an approvedsystem of gauging.5.2.4QualityParts shall be uniform in quality andcondition, clean, sound and free fromfins, burrs, cracks and otherimperfections detrimental to theirperformance, parts shall also be freeof tool marks except those resultingfrom producing the self lookingfeature and these must blendsmoothly without abrupt change.Visual.5.3ManufacturingNuts may be manufactured bymachining or forming dependantupon the material allowed by theproduct standard or drawing.Whichever method is used shall beapproved.5.3.1FormingFormed nuts may be produced by hotor cold forming process. If hot formedthe forming temperature shall notexceed 1150°C. and parts shall beair cooled or faster. The heatingequipment for forming shall be of atype which ensures a consistenttemperature throughout the batch.SIST EN 3005:2004
EN 3005:2003 (E)10Table 1 Technical requirements and test method*Q = Qualification approval requirements (4.1)A = Production acceptance requirements (4.2)ClauseCharacteristicTechnical requirementInspection and test methodQ/ASamplesize5.3.2Heat treatmentNuts formed frombar or wireThe heat treatment medium oratmosphere shall not cause any surfacecontamination except that on unmachinedsurfaces depth of oxide penetration to0,025mm is permissible. Machinedsurfaces to be free from surface oxide.Solution treat at a temperature of 1010° -1080°C holding at the selectedtemperature within ±15°C for not less than1 hour and oil quench or equivalent orfaster. Stabilization treatment at 850°C±8°C for 4 hours and air cool or faster.Any scale which will not be removed bysubsequent machining shall be removedby abrasive blasting.The heat treatment
equipment shallbe approved.The equipment for abrasive blastingshall be approved.5.3.3ThreadsThreads shall conform to therequirements of the product standard ordrawing prior to deformation of the selflocking feature.See 5.25.3.3.1Bearing surfacesquarenessThe bearing surface of the nut shall besquare with the thread pitch diameter axiswithin the limits specified on the productstandard or drawing.The squareness requirement shall applyto the complete bearing surface of thepart nuts having a bearing surfaceexceeding 1,5 times the tread majordiameter, the squareness requirementshall, unless otherwise specified by theproduct standard or drawing, apply only tothat portion of the bearing surface of thepart contained within a
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