wd900英译

FORDWORLDWIDEFASTENERSTANDARD紧固件国际标准日期：1996-10-01WS900GeneralSpecificationsforSpacedThreadTappingScrews间隔螺纹自攻螺钉总规范1.SCOPE.1.范围Thisstandardspecifiesthegeneralanddimensionalrequirementsforspacedthreadtappingscrewswithvariousheadforms.本标准规定了各种头部结构的间隔螺纹自攻螺钉总 要求 对教师党员的评价套管和固井爆破片与爆破装置仓库管理基本要求三甲医院都需要复审吗 和尺寸2.REFERENCES.2.引用ISO1478-TappingScrewsThreadWD950-MaterialandPerformancerequirementsforCarbonSteelTappingScrewsISO1478自攻螺钉螺纹WD950碳钢自攻螺纹材质和性能要求3.GENERALREQUIREMENTS.3.总要求3.1DIMENSIONSANDTOLERANCES.ThedimensionsandtolerancesofPanHead,RoundWasherHead,RaisedCountersunkHead,FlatCountersunkHead,HexagonHeadandFlangedHexagonHeadSpacedThreadTappingscrewsmustbeinaccordancewithTables1thru6,Figures1thru5includedinClauses2thru7,andAppendicesA,BandCasappropriate.3.1.尺寸和公差：大柱头、圆垫圈头、凸面埋头、平面埋头、六角和凸缘六角间隔螺纹自攻螺钉必须符合 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 1至表6，第2条至第7条中的图1至图2及附录A，B和C的相应部分。3.2SCREWTHREADS.3.2螺钉螺纹3.2.1THREADLENGTH.FortypesABandBscrewsofnominallengthsequalto8diameteror38mm,whicheverisshorter,thefullformthreadsshallextendclosetotheheadsuchthatthespecifiedminordiameterlimitsaremaintainedtowithinonepitchmaximumfromtheundersideofhead.Screwsoflongernominallengthsshallhaveaminimumlengthoffullformthreadequalto6diametersor38mm,whicheverisshorter.3.2.1螺纹长度对于公称长度等于8倍直径或38mmAB和B型螺钉，无论哪个更短，成形螺纹应延伸靠近头部，以便离头部内侧最远处使规定最小直径保持在1个螺距之内。公称长度更长的螺钉，无论哪个更短，成形螺纹长度最小应等于6倍直径或38mm。3.2.2SCREWLENGTH.Thelengthofthescrewshallbemeasuredparalleltotheaxisofthescrewfromthelargestdiameterofthebearingsurfaceoftheheadtotheextremepoint.ThetoleranceonlengthshallbeasspecifiedinTable1withminimumpracticalscrewlengthsasshowninTable1a.3.2.2螺钉长度应平行于螺钉轴线，测量从头部承载面最大直径处到终端的距离。表1规定了长度公差，表1a中列出了最小应用螺钉。Table1.Toleranceonlength表1长度公差ScrewType螺钉类型NominalScrewLength螺钉公称长度Toleranceon公差ABUpto25mminclusive小于等于25+/-0.8Over25mm25以上+/-1.3Upto20mminclusive小于等于20+/-0.8B,D和TROver20mmto40mminclusive大于20，且小于等于40+/-1.3Over40mm40以上+/-1.5Table1a.Minimumpracticalscrewlengths表1a最小应用螺钉长度Dimensionsinmm尺寸（mm）NominalSize公称尺寸90oHeads/90°螺头CountersunkHeads/埋头TypeABAB型TypeBB型TypeABAB型TypeBB型ST2.94.83.65.54.8ST3.55.54.46.76.3ST4.27.14.88.36.3ST4.88.35.99.57.9ST5.59.57.110.39.5ST6.310.37.111.99.53.2.3THREADFORM.ThreadformshallbeasspecifiedinISO1478.3.2.3螺纹形式ISO1478规定了螺纹形式3.3RECESSES.ThedimensionsandtolerancesofrecessesinPanHead,RoundWasherHead,RaisedCountersunkHeadandFlatCountersunkTappingScrewsshallbeinaccordancewithAppendixB.3.3凹槽：大柱头、圆垫圈头、凸面埋头、平面埋头自攻螺钉的凹槽尺寸和公差应符合附录B3.4GAUGING.3.4测量3.4.1COUNTERSUNKHEADS.ForrefereepurposesthedimensionskanddkaresatisfiediftheheadsmeetthegaugingrequirementsspecifiedinAppendixC.3.4.1埋头螺钉头部供判断之用，如果头部满足附录C规定的测量要求，则尺寸k和dk合格3.4.2PENETRATIONGAUGE.Themethodofpenetrationgauging,thegaugeandthegaugepointaredefinedinAppendixB.3.4.2贯入测量附录B规定了贯入测量方法，量规和量规尖部。4.GENERALREQUIREMENTS-PANHEAD.4.总要求-大柱头螺钉4.1HEADDIMENSIONS.HeaddimensionsshallbeasspecifiedinTable2.4.1头部尺寸头部尺寸规定见表2NOTE:Thetruncationoftheroundedsurfaceduetothecrossrecessisnotconsideredpartoftheheadheight.注释：由于十自形凹槽而切断圆形表面不算在头部高度之内4.2CROSSRECESSDEPTH.Thedepthofcrossrecess(penetrationgauging)shallbemeasuredparalleltotheaxisofthescrewshankandshallbeinaccordancewithvaluesspecifiedinAppendixB.4.2十字凹槽深度十字凹槽深度测量（贯入测量）应平行螺杆轴线，应符合附录B规定的值Figure1.Panheadscrews图1大柱头螺钉Table2.Principalheaddimensions表2大柱头螺钉主要尺寸Dimensionsinmm尺寸（mm）NominalSize公称尺寸ST2.9ST3.5ST4.2ST4.8ST6.3Pitch螺距1.11.31.41.61.8dkMax最大5.6789.512min最小5.36.67.69.111.5kmax最大2.42.63.13.74.6min最小2.22.32.83.44.3aMax最大1.11.31.41.61.8damax最大3.54.155.67.3fref标准566.5810DriverSize驱动等级12223r最小0.10.10.20.20.255.GENERALREQUIREMENTS-COUNTERSUNKHEADS.5.埋头螺钉总要求5.1HEADDIMENSIONS.5.1头部尺寸5.1.1OVALHEAD.SeeTable4.1.5.1.1半圆头，见表4.15.1.2FLATHEAD.SeeTable4.25.1.2平头见表4.2NOTE:Onheadshavingroundedtopsurfaces,thetruncationoftheroundedsurfaceduetotherecessisnotconsideredpartoftheheadheight.注释：圆形顶部，由于十字凹槽切断圆形表面不算在头部高度之内Figure2.RaisedCountersunk(Oval)HeadScrews图2凸面埋头（半圆形）螺钉Table4.1.Principalovalheaddimensions表4.1半圆形螺钉主要尺寸Dimensionsinmm尺寸（mm）NominalSize公称尺寸ST3.5ST4.2Theoretical理论Max最大8.29.4dkActualdk实际值Max最大7.38.4Min最小6.98kMax最大2.42.6aMax最大1.31.4fRef标准0.81rMax最大1.41.6tfref标准8.59.5DriverSize驱动等级22Figure3.FlatCountersunkheadscrews图3平面埋头螺钉Table4.2Principalflatheaddimensions表4.2平面埋头螺钉主要尺寸NominalSize公称尺寸ST3.5ST4.2ST4.8Theoreticalmax最大路论值8.29.410.4dkActualmaxdk最大实际值7.38.49.3kmaxk最大2.352.62.8amaxa最大1.31.41.6rmaxr最大1.41.62DriverSize驱动等级2225.2SIDEHEIGHT.Thesideheightofflatandraisedcountersunkheads(k)isareferencedimensionmeasuredparalleltotheaxisofthescrewfromthelargesttheoreticaldiameterofthebearingsurfaceoftheheadtothepointofintersectionofthebearingsurfaceoftheheadandbasicmajordiameterofscrewforfullheadedscrews,andfromthelargesttheoreticaldiameterofthebearingsurfaceoftheheadtothecommencementofthetruncationfortruncatedheadscrews.5.2侧高平面和凸面埋头螺钉侧高（k）为参考尺寸，平行于螺钉轴线测量从头部承载面最大理论直径处到头部承载面与成形螺纹基圆直径交叉处的距离和头部承载面最大理论直径螺钉头部凹槽切断起点。5.3CROSSRECESSDEPTH.Thedepthofcrossrecess(penetrationgauging)shallbemeasuredparalleltotheaxisofthescrewshankandshallbeinaccordancewiththevaluespecifiedinAppendixB.5.3十字凹槽深度：平行于螺杆轴线测量凹槽深度（贯入测量），该值要符合附录B规定值。6.GENERALREQUIREMENTS-HEXAGONHEAD.6六角头螺钉总要求6.1HEADDIMENSIONS.Acrosscorners,acrossflatsandoverallheightshallbeasspecifiedinTable5.6.1.头部尺寸对角、对边及总高见表5规定6.2FILLETRADIUS.Theradiusofthefilletunderthebearingsurfaceoftheheadshallbenogreaterthan15%ofthebasicscrewdiameter.6.2内圆角半径头部下面内圆角半径应不大于基圆直径的15%。6.3EDGEROUNDING.Aslightroundingofalledgesandcornersofthehexagonheadispermissibleprovidedthediameterofthebearingsurfaceisnotlessthan90%oftheminimum"acrossflats"dimension.6.3倒棱角若承载面直径大于对边最小尺寸的90%，则允许对六角头进行轻微的倒棱和倒角。6.4INDENTATIONANDHEADMARKING.Theoptionalindentationinheadshallnotimpairfunctionofpart.Shapeisoptionalwiththemanufacturer.6.4头部凹痕和标记头部凹痕结构可选，但不应削弱零部件功能。形状由厂商确定。Figure4.Hexagonheadscrews图4六角头螺钉NOTES:ForEAOprocurementheadsmustbemarkedCHasshowninFigure4.ForNAAOprocurementandassembly:Headsmustbemarkedtoidentifymanufacturerandmetric.MetricidentificationshallconsistofMETorthenumeral2,atthemanufacturersoption,locatedonthetopsurfaceoftheheadandraised0.2mmto0.4mm,orindented.Theminimumheightofthemarkingsshallbe0.25timesthemaximumwidthacrossflats.注释：EAO，头部应标注CH，如图4。关于NAAO及装配体：头部必须标明厂商和度量单位。度量标记由厂商选定为MET或数字2，高于或低于顶部表面0.2mm~0.4mm。标记高度最低为0.25倍最大对边宽度。Table5.Principalheaddimensions表5头部主要尺寸Dimensionsinmm尺寸（mm）NominalSize公称尺寸ST2.2ST2.9ST3.5ST4.2ST4.8ST6.3smax最大3.255.57810min最小3.024.825.326.787.789.78eMin最小3.365.365.927.558.6610.89kMax最大1.271.522.362.793.054.83min最小1.021.242.032.442.674.377.GENERALREQUIREMENTS-HEXAGONFLANGEHEAD7.凸缘六角头螺钉总要求7.1HEADDIMENSIONS.DimensionsshallbeasspecifiedinTable6.7.1头部尺寸表6规定了头部尺寸7.2INDENTATIONANDHEADMARKING.Theoptionalindentationinheadshallnotimpairfunctionofpart.Shapeisoptionalwiththemanufacturer.7.2头部凹痕和标记头部凹痕结构可选，但不应削弱零部件功能。形状由厂商确定。-+Figure5.Flangedhexagonscrews图5凸缘六角头螺钉凸缘六角头螺钉NOTES:ForEAOprocurementheadsmustbemarkedCHasshownbelow.ForNAAOprocurementandassembly:Headsmustbemarkedtoidentifymanufacturerandmetric.MetricidentificationshallconsistofMETorthenumeral2,atthemanufacturersoption,locatedonthetopsurfaceoftheheadandraised0.2mmto0.4mm,orindented.Theminimumheightofthemarkingsshallbe0.25timesthemaximumwidthacrossflats.注释：EAO，头部应标注CH，如下NAAO及装配体：头部必须标明厂商和度量单位。度量标记由厂商选定为MET或数字2，高于或低于顶部表面0.2mm~0.4mm。标记高度最低为0.25倍最大对边宽度Table5.Principalheaddimensions表5头部主要尺寸Dimensionsinmm尺寸（mm）NominalSize公称直径sedcckk1rr1daMax最大Min.最小Min.最小Max最大Min.最小Min.最小Max最大Min.最小Max最大Min.最小Max.]最大ST2.943.844.275.75.20.432.10.20.13.5ST3.554.855.47.570.453.62.30.20.14.1ST4.25.55.3268.27.50.5542.80.20.25ST4.876.787.69.890.65.23.30.30.25.6ST6.387.788.6612.211.20.956.24.20.40.37.37.3GAUGEMEASUREMENTREQUIREMENTS.7.3.测量方法要求7.3.1GAUGINGOFTHEHEADOFFLANGEDHEXAGONHEADPRODUCTS.Theheadshallbegaugedusingtworinggauges,AandB,todemonstratethecoincidentalacceptabilityofhexagonheight,wrenchingheight,cornerfill,widthacrosscornersandflangethicknessatthejunctionwiththehexagonportion.7.3.1六角凸缘头部测量用A和B2个环规测量头部来验证六角高度、扭转高度、棱角、对角及六面接合处的凸缘厚度一致性。GaugeAshallbeplacedovertheheadasshownandtheheadthenseatedaxiallyinGaugeB.WhenGaugeAisincontactwiththeflangeasshownbelow,theoppositefacemustnotcontactGaugeB.如图所示，A环规放在头部上方，B环规沿轴向导入。当A环规接触到凸缘，另一面不应接触到B环规。GaugedimensionsarespecifiedinTable7.环规尺寸见表7规定Figure6.Gaugingofflangedhexagonheads图6六角凸缘头测量Table7.表7Dimensionsinmm尺寸（mm）NominalSize公称直径ST2.9ST3.5ST4.2ST4.8ST6.3D+0.00-0.014.625.756.358.089.24C+0.00-0.011.892.042.522.973.78G+0.00-0.014.265.395.997.598.65M.Min223337.3.2GAUGINGOFTHEHEADOFPLAINHEXAGONHEADPRODUCTS.TheheadshallbegaugedusingtwoplainringgaugesAandBtodemonstratethecoincidentalacceptabilityofminimumwrenchingheightandcornerfill.Productsaretobegaugedafterplating.TheorientationofthegaugesisoptionalbutincasesofdisputethemethodshowninFigure7shallbetherefereemethod.7.3.2平面六角头测量用A和B2个平面环规测量头部来验证六角高度、扭转高度、棱角、对角及六面接合处的凸缘厚度一致性。产品应在电镀后进行测量。可选择定位，但为避免分歧，图7所示方法可供参考。GaugeBshallbeplacesonflathorizontalsurface.TheheadshallbeseatedaxiallyinGaugeBasshowninFigure7gaugeAshallbeplacedovertheheadasshowninFigure7.Thegaugesshallnottouch.B环规应放置于横平面上。头部轴向放置在B环规，如图7所示，A环规放置在头上方，如图7所示。测规不与产品接触。Figure7.Gaugingoftheplainhexagonheads图7平面六角头测量Table8.表8Dimensionsinmm尺寸（mm）NominalSize公称尺寸ST2.2ST2.9ST3.5ST4.2ST4.8ST6.3D+0.00-0.013.714.625.756.358.089.24C+0.00-0.010.891.061.661.952.143.38G+0.00-0.013.354.265.395.997.598.65MMin.222333ERef.33.5455.57