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Machine Screws

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Phillips Pan, Phillips Flat Head, and Sems Pan Head Machine Screws.

  • Phillips Pan Head machine screws have a pan-shaped head with a flat top and vertical sides and are commonly used in electronics.
  • Phillips Flat Head machine screws have a flat top with a conical bearing surface and are commonly used in countersunk holes where the screw head must sit...
  • Phillips Pan External Sems machine screws essentially have a ‘pre-assembled’ lock washer beneath the head of the screw which is free-spinning...