ISO 28741-2023.docx

AnnexA(normative)Sparkp1.ugswithha1.fthreadandtheircy1.inderheadhousingsFigurcdimcnsionsoftheCyHnderPHndP1.ehOUSingSParkp1.ugp1.ugsthreadIndudingare1.here1.ateddg3umu1Dimensionsinmi1.1.imetresFigure.1.Sparkp1.ugwithha1.fthreadDimensionsinmi1.1.imetresNomina1.TheZ1.engthofthecy1.inderheadhousingsha1.1.besufficienttoensurethattheendofthesparkp1.ugthreaddoesnotprojectintothecombustionchamberatanypointwhenthesparkp1.ugistightenedtomaximumtorque.Figure 1.1 Cy1.inderheadhousingforsparkp1.ugwithha1.fthreadAnnexB(informative)Optiona1.termina1.sforcompactsparkp1.ugs8,5app1.icationspecificsP1.UgSdim(MMMmUU4hUUso1.idposttermina1.sandthreadedtermina1.sfornon-automotiveDimensionsinmi1.1.imetres5.3±0.52.7tO.S810.5Figure 1.2 So1.idposttermina1.forcompactsparkp1.ugsDimensionsinmi1.1.imetreso±e6.35±0.5Qy90Figure 1.3 /Mtemativeso1.idposttermina1.forcompactsparkp1.ugsDimensionsinmi1.1.imetres1.engthofthread.Cy1.indriCci1.part.Dependingonmanufacturingprocess,c1.ass7eisacceptab1.eonfinishedproduct.Figure 1.4 -Threadedtermina1.forcompactsparkp1.ugsAnnexC(normative)Obinationcy1.inderheadhousingforparkp1.ugswithconica1.orf1.atseatingThiscombinationcy1.inderheadhousingison1.yusedfor14mmsparkp1.ugswithaseatingdiameterof1pitchdiameter1,TheZand1：1.engthsofthecy1.inderheadhousingsha1.1.besufficienttnensurethattheendofthesparkp1.ugthreaddocsnotprojectintothecombustionchamberatanypointwhenthesparkp1.ugistightenedtomaximumtorque.ZristhediSVffr&n1.t7wIheC次密片Er桥福8ft*thegaugediameter.(H2361Bib1.iographyiS©fft¢5-1.:2013,ISOgeneraIpurposemetricscrewthreadsTo1.erancesPartI：Princip1.esandi2,Roadvehic1.esScreenedandwaterproofspark-p1.ugsandtheirconnectionsTyPCSIAISO3895,Roadvehic1.esScreenedandwaterproofspark-p1.uganditsconnectionType2ISO3896,Roadvehic1.esScreenedandwaterproofspark-p1.uganditsconnectionTyPe3ISO4095,Aerospace-Bihexagona1.drives-WrenchingConfiguraiion-MetricseriesISO11565,Roadvehic1.esSpark-p1.ugsTestmethodsandrequirementsICS43.060.50