Wafer Head Self Drilling Screw
Head Type: Wafer 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
Packing: Small box or bulk in carton with or without pallet
Service: OEM/ODM is accepted
- Description
- Inquiry
Introduce
Self tapping screws come with a sharp, piercing tip or a flat, blunt tip. The sharp tipped screws are designed for drilling their own hole into softer materials such as wood and plastic so they don’t need a pilot hole. The advantage of the flat-tipped screw is that it won’t get stuck in the material and break off.
A round head screw is a form of self-drilling screw, which means it is specifically designed to bite into metal. This eliminates the time and effort involved with drilling an additional pilot hole. Self-drilling screws have become an increasingly popular choice for a wide range of roofing, sheet metal and wood materials.
Dimension drawing
Wafer Head Self Drilling Screw
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.
- etween these two, however, self-drilling screws offer two distinct advantages: time and costs saved at assembly time, and reduced error in installation, which often happens if one pre-drills holes in the wrong size.
Application
- Securing gutter systems
- Shed, warehouse and carport construction
- Garage door fastenings
- Metal roofing installation
- Electrical projects