Definition & Meaning

(screw or thread) tap; bolt-shaped cutting tool grooved in the axial direction for forming an internal screw thread

sī zhuī

丝 锥

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n.(screw or thread) tap; bolt-shaped cutting tool grooved in the axial direction for forming an internal screw thread
- cū zhì sī zhuī
  粗制丝锥
  taper tap
- jīng sī zhuī
  精丝锥
  bottoming tap

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