Self-Drilling Screws with Wings
What is a Self Drilling Screw with Wings?
A self drilling screw with wings is specially designed for fixing sandwich panels or wood to steel structures.
The wings under the head enlarge the hole in the outer material (such as wood or panel surface) before the drilling point reaches the steel. Once the screw contacts the steel, the wings break off, allowing proper thread engagement.
This design helps prevent surface damage and ensures clean installation.
|
Diameter(mm) |
Diameter(inch) |
Length(mm) |
Length(inch) |
|
4.8 |
#10 (0.190") |
19-50 |
3/4" – 2" |
|
5.5 |
#12 (0.216") |
32-65 |
3/4" – 7.2'' |
|
6.3 |
#14 (0.250") |
25-185 |
1" – 7.2" |
Key Features
Hex Washer Head
Strong Clamping for Steel Fixing
Provides stable fastening for steel structures and roofing systems
01
Self-Drilling TEK Point
Fast Drilling up to 6mm Steel
No pre-drilling required, suitable for steel-to-steel applications
02
Wings Design
Prevents Damage to Sandwich Panels
Wings enlarge the hole in soft material and break off when reaching steel
03
Sandwich Panel Application
Ideal for Insulated Roofing Systems
Widely used in sandwich panel and wood-to-steel fixing
04
Corrosion Resistance
Available in Ruspert & HDG Coating
Suitable for outdoor and coastal environments
05
Why Use Screws with Wings?
Prevents surface damage on sandwich panels
Wings enlarge the hole before drilling into steel
Reduces installation resistance in multi-layer materials
Ensures proper thread engagement after wings break off
Ideal for wood-to-steel and insulated roofing systems
Material and Coating Options
●Carbon Steel, Zinc-Plated – general indoor use, cost-effective.
●Ruspert / Dacromet Coated – enhanced corrosion resistance for outdoor structures.
●Stainless Steel (A2 / A4) – for marine, outdoor, or corrosive environments.
Typical Applications
Sandwich panel installation
Wood to steel fixing
Roofing systems with insulation layers
Light steel structure projects
This type of screw is commonly used in industrial buildings and cold storage construction.
Technical Specifications
Diameter: M4.8 / M5.5 / M6.3
Length: 25mm – 200mm
Head Type: Hex Washer Head
Drive Type: External Hex
Drill Point: TEK #3 / #4 / #5
Material: Carbon Steel (C1022)
Heat Treatment: Case Hardened
Drilling Capacity
Typical drilling capacity depends on the drill point:
TEK #3 → up to 4.5mm steel
TEK #4 → up to 6mm steel
TEK #5 → up to 8mm steel
For thicker steel, pre-drilling or higher TEK level is recommended.
Surface Treatment Options
Zinc Plated → indoor use
Ruspert Coating → high corrosion resistance
Hot Dip Galvanized → outdoor and coastal projects
Coating selection depends on project environment and required lifespan.
FAQ
Q1: When do the wings break off?
They break automatically when the screw reaches the steel surface.
Q2: Can I use this screw without wings?
If there is no soft layer (like wood or panel), wings are not necessary.
Q3: Will the wings affect strength?
No. Once broken, the screw functions like a standard drilling screw.
Q4: Is this suitable for sandwich panels?
Yes, it is one of the most recommended solutions.
Packaging & Supply
Packing: bulk / box / bucket
OEM packing available
Lead time: 20–30 days
Samples available
CTA
If you are working on sandwich panel or wood-to-steel projects, this type of screw can improve installation efficiency and reduce damage.
Send us your requirements (size, coating, application), and we will recommend the suitable solution.
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