sourcing map M4 x 20mm Wood Screws Phillips Flat Head Carbon Steel Self Tapping Screws Black 100pcs

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sourcing map M4 x 20mm Wood Screws Phillips Flat Head Carbon Steel Self Tapping Screws Black 100pcs
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Product description

  • Made of carbon steel for high hardness and strength. Black oxide finishes for corrosion and resistance.
  • The threaded design can screw into the hardwood faster and reduce the cracking problem, for wood and fiberboard are the good replacement.
  • Widely used in electronics, communication, electric power products, cultural goods, floorboard fastening applications, etc.

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