Hexagonal Head Self Drilling Screw

Head Type:  Hexagona Head

Point Type: Self Drilling

Color: Plain,Zinc Plated

Thread Type:  coarse / Fine / Wing Teks 

Screw Length: 9.5mm~127mm

Diameter: m3.5 / m3.9 / m4.2 / m4.8 / m5.5 / m6.3

Finish: Black / Grey Phosphated,Yellow / Blue White Zinc
Small box or bulk in carton with or without pallet

Service: OEM/ODM is accepted

  • Description
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Hexagonal Head Self Drilling Screw have a point that acts as a drill bit and sharp cutting threads that tap the hole during installation. Self drilling screws are a commonly used variety of screw for quick drilling into both metal and wood. However, self-drilling screws can usually be identified by their tips and groove (notch) tips.

Hexagonal head screws are screws with a hexagonal-shaped head that can be tightened with a wrench (spanner) or socket, which engages with the external faces of the hex head.

Dimension drawing

Hexagonal Head Self Drilling Screw


  • Hex washer head screw is a self-piercing screw with a built-in washer at the screw head.
  • The type of self-drilling screw with hexagon washer can be easily identified by the point that imitates the appearance and function of the drill bit. The tip can make the screw easy and smooth
  • Engraved on metal and wooden surfaces, so there is no need to drill a separate pilot hole.
  • Full thread: The screw structure with full thread ensures that the screw can better distribute the tension and withstand greater force in a longer period of time.

The difference between self-tapping screws and self-drilling screws

  • The most important difference between self-tapping and self-drilling screws is that self-tapping screws cannot go through metal without a pilot hole, which must be pre-drilled or pre-punched.
  • Unlike self-tapping screws, self-drilling screws need no pilot hole to cut and fasten; they can drill, tap, and fasten in one go, which saves you the extra step of drilling, then fastening.
  • However, between the two, self-drilling screws have two obvious advantages: saving time and cost during assembly, and reducing installation errors. If the size of a drill is wrong, installation errors usually occur.


  • Solar panel installation
  • Metal-to-metal fastening
  • Metal and light steel framing
  • Used for heavier gauge metal fastening applications