常用机件的表达
Representation for Commonly Used Parts
螺纹牙型 thread tooth profile
三角形螺纹 triangular thread
矩形螺纹 square thread
梯形螺纹 trapezoidal (acme) thread
锯齿形螺纹 buttress thread
外(阳)螺纹 external (male) thread
内(阴)螺纹 internal (female) thread
倒角 chamfer
球头 round heads
平头 flat heads
螺尾 thread runout
退刀(越程)槽 undercut
车外螺纹 external thread lathing
车内螺纹 internal thread lathing
套外螺纹 covering external thread
攻内螺纹 tapping
钻孔 drilling
铰孔 reaming
通孔 through hole
盲孔 blind hole
螺纹盲孔 blind threaded hole
麻花钻 twist drill
钻头角 point angle
螺纹终止线 thread end line
公称直径 nominal diameter
螺纹大径 major diameter
螺纹小径 minor diameter
螺纹中径 pitch (effective) diameter
牙底 root
牙顶 crest
螺距 pitch
导程 lead
旋向 revolving direction
螺纹角 thread angle
右旋螺纹 right hand-thread
左旋螺纹 left hand-thread
顺时针方向 clockwise
逆时针方向 anti-clockwise
线数 number of starts
单线螺纹 single-start thread
双线螺纹 double-start thread
多线螺纹 multiple thread
标准螺纹 standard screw
非标准螺纹 nonstandard screw
特殊螺纹 special thread
粗牙普通螺纹 coarse pitch thread
细牙普通螺纹 fine pitch thread
螺纹规格 screw size
普通(公制)螺纹 general (metric) thread
管螺纹 pipe thread
圆柱内管螺纹 parallel internal pipe thread
圆锥内管螺纹 taper internal pipe thread
圆柱外管螺纹 parallel external pipe thread
圆锥外管螺纹 taper external pipe thread
小螺纹 mini thread
传动螺纹 transmission thread
558非密封管螺纹 558 non-sealing pipe thread
558密封管螺纹 558 sealing pipe thread
608密封管螺纹 608 sealing pipe thread
米制锥螺纹 metric taper thread
自攻螺钉螺纹 self-drilling screw thread
木螺钉螺纹 wooden nail thread
气瓶专用螺纹 thread for gas tanke
螺纹紧固件 screw fasteners
螺纹旋合长度 length of thread engagement
中旋合长度 thread engagement group-normal
螺栓 bolt
六角头螺栓 hexagon head bolt
双头螺柱 stud
有效长度 effective length
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工程制图（中英文词汇）