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螺纹大径————————————————————————————————作者:————————————————————————————————日期:螺纹大径:MajorDiam:机械性能ﻫ通止规:Go/Nogogageﻫ螺纹底径:Minordiamﻫ螺纹中径:Pitchdiamunifiedthread统一英制螺纹ﻫmechanicalandphysicalpropertiesLustratehydrogenaftergalvanizingtoavoidhydrogenembrittlement镀后去氢防止氢脆Withacrosscorners对ﻫWithacrossflats对边ﻫCasecarburization表面渗碳角Radiusoffillet:头下圆角Transitionthreadlength过度螺纹Rockwell铬氏硬度ﻫWrenchingheight扳拧高度Brinell布氏硬度ﻫVickers维氏硬度TensiﻫSaltspraydevice盐雾试验箱ﻫMetallographymicroscope金相显微镜=PC8ﻫHotforging红镦ﻫColdforming冷打ﻫletestingmachine拉力试验机propertyclass8机械性能8级原材料:Rawmaterialﻫ冷拔:Drawingﻫ球化退火:Annealing螺纹成型:RollThreadingﻫ机加工:Machiningﻫ冷镦:Forming表面处理:finishﻫ热处理:heat-treatment检验:Inspectionﻫ去氢:Lustratinghydrogen车床:latheﻫ入库:Stockingﻫ包装:Packing红打:hotforgingﻫ磨制:grindingLength长度ﻫDiameter直径ﻫ冲压:punching1标准GB(国标)ISO(国际标准)(M.MF(公制牙ﻫ螺纹ﻫﻫBA(英制)2ﻫ(ANSI/ASME(美标ﻫ(JIS(日标ﻫ(DIN(德制UNC.UNF(美制牙)BSW.BSF(英制牙)螺栓ﻫ海关编码73181500373181600螺帽73182100垫圈BO=blackoxide氧化发黑IHH=indhexhead锯六角头sw/fw=splitwasher/flatwasher弹垫平垫ﻫPH=phillips十字槽kepnut锁紧螺母cementation渗碳acornnut盖形螺母螺丝头型Oval半沉头ﻫ(Pan圆头(盘头H.W.H..六角小法兰(CSK沙拉头(沉头ﻫH.W.F.六角大法兰Truss盘头带垫ﻫBugle喇叭头ﻫLargewafer大扁平头Serra-tion垫下带花ﻫPhill十字槽ﻫPozi米制槽FlowerHead开花头Pistonbolt活塞螺钉ﻫ6-bobesrecess内梅花CﻫHexagonheadbolts-fullthread六角头螺栓全螺纹ﻫWindingbolt线圈螺钉Squareheadbolt-productgradeC方头螺栓C级ﻫarriagebolt马车螺栓Flatcountersunksquareneckbolts沉头方颈螺栓Flatcountersunknibbolts沉头带榫螺栓常用紧固件英语Cupheadsquareneckbolts半圆头方螺栓Cupheadnibbolts半圆头带榫螺栓Cupheadsquareneckboltswithlargehead–productgradeC大半圆头方颈螺栓C级Hexagonheadbolts-productgradeC