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Self Drilling Hex Head Screw

Hex head self-drilling screws enable drilling without first creating a pilot hole. These screws are usually used to join materials like sheet metal.

  • Material: C1022 with hardened.
  • Standard: ISO15480, DIN7504.
  • Head type: hex washer head, hex flange head.
  • Finish:

white/yellow/blue zinc coated

hot-dipped galvanized

zinc-nickel alloy coating

black oxidized



  • Assembling: steel bonded washer, stainless steel bonded washer, PVC washer, stainless steel hex cap, umbrella-type washer, nylon cap, EPDM washer
  • Diameter: 3.5mm – 6.3mm.
  • Length: 13mm – 200mm.
  • Certification: CE

Production Description

Self Drilling Hex Head Screw

Lituo is a professional manufacturer of Hex head self drilling screw. Our Hex head screw has the advantages of fast tapping speed, hardness, and good corrosion resistance. It is a popular screw in the hardware and building materials industry all over the world.

Our Hex head screw factory is located next door to a surface treatment factory with the best technology. The factory belongs to Lituo Industrial Group, so we are very skilled in applying most of the surface treatment technologies.

If you don’t know about Hex head self drilling screw, let me tell you the most basic information about Hex head self drilling screw.

1、Drill tail screw is a kind of screw with a drill bit, hexagonal bolt through the construction of special power tools, drilling, tapping, fixing, locking in one go. Self-tapping screws are mainly used for the connection and fixing of some thinner plates, such as the connection of color steel plate and color steel plate, the connection of color steel plate and purlin, wall beam, etc. Its penetration capacity is generally not more than 6mm, and the maximum is not more than 12mm.

2, drill tail screws are often exposed to the outdoors, they have a strong corrosion resistance, and their rubber seals can ensure that the screws do not penetrate water and have good corrosion resistance.

3, drill tail screws are usually described by the screw diameter grade, the number of threads per inch length and screw length three parameters. Screw diameter grade 10 and 12, the corresponding screw diameter of 4.87mm and 5.43mm; the number of threads per inch length of 14, 16, 24 three levels, the more the number of threads per inch length, the stronger its self-drilling ability;.

4, drill tail screws are the tail is drilled or pointed tail, no auxiliary processing, can be directly in the setting material, the base material drilling, tapping, locking, substantial savings in construction time. Drill tail screws compared to ordinary screws, its toughness and maintenance force is high, the combination of a long time will not loosen, the use of safety. In the combination of construction, building, housing and all other places, the workability, cost to credibility of self-tapping self-drilling screws for the best economic fasteners. Now most of the world’s high-rise buildings and high-speed traffic construction, more need for high-quality drilling screws.

Second, the field of application

1、Stainless steel plate, metal steel plate, galvanized steel plate, engineering installation.

2, metal curtain wall, metal light compartment, plastic steel doors and windows, such as indoor and outdoor installation.