Bolt and fastening component

Bolt and fastening component

  • CN 203,081,970 U
  • Filed: 01/23/2013
  • Issued: 07/24/2013
  • Est. Priority Date: 01/23/2013
  • Status: Active Grant
First Claim
Patent Images

1. a screw is characterized in that, comprising:

  • nut (3) and be the hollow screw rod (4) of cylindrical screw shape.

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