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  • 09

    2019-10

    Cross recessed countersunk wood screw introduction

    Cross recessed countersunk wood screws, English name: wood screws are similar to machine screws, but the thread on the screw is a special wood screw w...

  • 09

    2019-10

    Type of nut

    The nut is a part that tightly connects the mechanical equipment. The nut of the same specification can be connected through the inner thread...

  • 07

    2019-10

    Screw history

    The Greek mathematician Alcutas once described the principles of screws, screws and screws. In the first century AD, the Mediterranean world began to ...