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【正版授权】 ISO 12268:1997 EN Aerospace - Nuts,hexagonal,plain,reduced height,reduced across flats,with MJ threads,classifications: 450 MPa (at ambient temperature)/425 degrees C_第1页
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基本信息：

  • 标准号：ISO 12268:1997 EN
  • 标准名称：航空航天 螺母，六角形，普通型，减小高度，减小横向平面，带 MJ 螺纹，分类：450 兆帕（环境温度）/425 摄氏度、600 兆帕（环境温度）/235 摄氏度、600 兆帕（环境温度）/315 摄氏度、600 兆帕（环境温度）/650 摄氏度、900 兆帕（环境温度）/235 摄氏度、900 兆帕（环境温度）/730 摄氏度和 1 100 兆帕（环境温度）/600 摄氏度 尺寸
  • 英文名称：Aerospace — Nuts, hexagonal, plain, reduced height, reduced across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/425 degrees C, 600 MPa (at ambient temperature)/235 degrees C, 600 MPa (at ambient temperature)/315 degrees C, 600 MPa (at ambient temperature)/650 degrees C, 900 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/730 degrees C and 1 100 MPa (at ambient temperature)/600 degrees C — Dimensions
  • 标准状态：现行
  • 发布日期：1997-07-31

文档简介

ISO12268:1997ENAerospace—Nuts,hexagonal,plain,reducedheight,reducedacrossflats,withMJthreads,areusedinaerospaceengineeringtosecurevariouscomponentstogether.Thefollowingdimensionsareprovidedindetailinthisstandard:

Classifications:

*450MPa(atambienttemperature)/425degreesC

*600MPa(atambienttemperature)/235degreesC

*600MPa(atambienttemperature)/315degreesC

*600MPa(atambienttemperature)/650degreesC

*900MPa(atambienttemperature)/235degreesC

*900MPa(atambienttemperature)/730degreesC

*1100MPa(atambienttemperature)/600degreesC

Dimensionsincludethefollowing:

*Threaddiameter(D)

*Threadpitch(P)

*Nutheight(h)

*Flangewidth(w)

*Threadlength(L)

*Flangethickness(t)

Threaddiameter(D)referstothediameterofthehexagonalthread,whichdeterminesthetorquerequiredtotightenorloosenthenut.Threadpitch(P)referstothedistancebetweenadjacentthreadsanddeterminesthedistancebetweenthenutandthecomponentbeingsecured.Nutheight(h)referstothedistancefromthetopofthehexagonalheadtotheouteredgeoftheflange.Flangewidth(w)referstothewidthoftheflange,whichprovidesadditionalstrengthandstabilitywhensecuringcomponentstogether.Threadlength(L)referstothelengthofthethreadprotrudingfromthenutbody,whileflangethickness(t)referstothethicknessoftheflangematerial.

Whenselectinganutwiththesedimensions,considerationmustbegiventothespecificapplicationandrequiredtorquevalues,aswellasanyrequiredcomponentclearancesandtolerances.Thesedimensionsprovideabas

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