螺栓各部位的英文名称(共9页).doc

精选优质文档-倾情为你奉上螺旋线helix 螺纹screwthread 圆柱螺纹parallelscrewthread 圆锥螺纹taper screwthread 外螺纹external thread 内螺纹internal thread 单线螺纹single-start thread 多线螺纹multi-start thread 右旋螺纹right-handthread 左旋螺纹left-hand thread 自攻螺纹tapping screw thread 基本牙型basicprofile 牙型角threadangle 牙型半角half of threadangle公称直径nominaldiameter螺纹大径major diameter 螺纹小径minor diameter 螺纹中径pitchdiameter 螺距pitch 螺纹导程lead 螺纹升角leadangle 螺纹牙