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This term refer to the portion of the needle between the butt and the top of the shoulder.

 
1. Round Shank
2. Flattened Shank
  (Flattened on one side, two ides,
   etc)
3. Grooved Shank
4. Notched Shank
5. Threaded Shank
6. Reduced Shank

  

    

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