EN 3752:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Nuts, self-locking, MJ threads, in heat resisting steel FE-PA92HT (A286), MoS2 coated - Classification: 1 100 MPa (at ambient temperature) / 425°C - Technical specificationAerospace series - Nuts, self-locking, MJ threads, in heat resisting steel FE-PA92HT (A286), MoS2 coated - Classification: 1 100 MPa (at ambient temperature) / 425°C - Technical specification49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 3752:2003SIST EN 3752:2004en01-maj-2004SIST EN 3752:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3752January 2003ICS 49.030.30English versionAerospace series - Nuts, self-locking, MJ threads, in heatresisting steel FE-PA92HT (A286), MoS2 coated -Classification: 1 100 MPa (at ambient temperature) / 425°C -Technical specificationThis European Standard was approved by CEN on 2 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 3752:2003 ESIST EN 3752:2004

1)Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking orcracking when tested with a bolt of a higher strength class.2)Maximum test temperature of the partsSIST EN 3752:2004

3)Published by: American Society for Testing and Materials (ASTM), 1916 Race street, Philadephia, PA 19103, USASIST EN 3752:2004

4)Definition taken from ISO 3534SIST EN 3752:2004

Sample sizeQ5.1MaterialIn accordance with the productstandard or definition documentChemical analysis or certificate ofconformity issued by themanufacturer of the semi-finishedproductAQ465.2Dimensions,tolerances andtolerances of formand positionIn accordance with the productstandard or definition documentStandard gaugingATables 3 and 45.3ManufacturingQ5.3.1FormingNuts shall be formed by a hot orcold forming process.If hot formed, the formingtemperature shall not exceed 1150 °C and they shall be aircooled or faster.The equipment shall ensure auniform temperature throughoutthe production batch.The method of forming shall beindicated.Q5.3.2Heat treatmentThe heat treatment medium oratmosphere shall not cause anysurface contamination except aspermitted by 5.5.5.Any scale which will not beremoved by subsequentmachining shall be removed byabrasive blasting.Calibration of the heat treatmentequipment shall be confirmed.Appropriate equipment5.3.2.1Solution andprecipitation heattreatmentSolution treat (if applicable) at atemperature of 900 °C to 980 °C,held at the selected temperaturewithin ± 15 °C for between 1 hmin. and 2 h max., quench in oil,or alternative medium or faster.Precipitation treat at 720 °C + 10°C held at temperature for 16 h ±15 min cooled in air or faster.(continued)SIST EN 3752:2004
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