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High-Quality Color Galvanized Hexagonal Self-Drilling Screws - High Torque Fasteners from China Suppliers and Factory Manufacturers, Factories
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High-Quality Color Galvanized Hexagonal Self-Drilling Screws - High Torque Fasteners from China Suppliers and Factory Manufacturers, Factories
Hexagonal self-drilling screws are innovative fasteners designed for applications that demand superior torque and strong fixation. These screws, featuring hexagonal nuts, deliver enhanced fastening and tensile strength compared to conventional screws. With their self-tapping functionality, they can drill and tap directly into materials, eliminating the need for pre-drilling. Commonly used in various domains, such as metal structures and thin plate materials, hexagonal self-drilling screws are ideal for securing steel components and more. As a leading manufacturer in China, our factory supplies high-quality hexagonal self-drilling screws that meet the needs of diverse applications.
Hexagonal drill screws are essential components for mechanical fixing in carpentry, metalworking, and construction. The specialized hexagonal head design ensures superior torque application with wrenches or specialized tools, providing a more secure hold and reducing the risk of breakage compared to standard head designs.
Thread Specifications
ST2.9
ST3.5
ST4.2
ST4.8
ST5.5
ST6.3
P
Pitch
1.1
1.3
1.4
1.6
1.8
1.8
a
Max
1.1
1.3
1.4
1.6
1.8
1.8
dc
Max
6.3
8.3
8.8
10.5
11
13.5
Min
5.8
7.6
8.1
9.8
10
12.2
c
Min
0.4
0.6
0.8
0.9
1
1
s
Maximum = nominal
4
5.5
7
8
8
10
Min
3.82
5.32
6.78
7.78
7.78
9.78
e
Min
4.28
5.96
7.59
8.71
8.71
10.95
k
Maximum = nominal
2.8
3.4
4.1
4.3
5.4
5.9
Min
2.5
3
3.6
3.8
4.8
5.3
kw
Min
1.3
1.5
1.8
2.2
2.7
3.1
Drilling depth
Max Range
1.9
2.25
3
4.4
5.25
6
Key Applications & Functions
Fixation of Thin Plate Materials for Simple Buildings
Building Structure Reinforcement and Support
Building Decoration Fixation
Mechanical Equipment Fixation
Automotive Component Assembly
Installation in the Construction Industry
Frequently Asked Questions
QWhat are color galvanized hexagonal self-drilling screws used for?
They are widely used in carpentry, metalworking, and construction for fixing thin plate materials, reinforcing structures, and assembling mechanical equipment or automotive components.
QWhat thread sizes are available?
Standard thread specifications include ST2.9, ST3.5, ST4.2, ST4.8, ST5.5, and ST6.3, with pitch sizes ranging from 1.1mm to 1.8mm.
QWhy choose a hexagonal head design?
The hexagonal head allows for higher torque application using standard wrenches, ensuring a firmer fixation and reducing the likelihood of stripping or breaking.
QWhat is the maximum drilling depth for these screws?
Drilling depth varies by size; for instance, the ST6.3 screw can handle sheet metal thickness or drilling depths up to 6mm.
QWhat does "color galvanized" mean?
It refers to a zinc-based coating followed by a color treatment, which provides enhanced corrosion resistance and an aesthetic finish to match specific project environments.
QAre these screws reusable?
Yes, their design allows for frequent tightening and loosening. However, always inspect the threads for wear before reuse to maintain maximum safety.
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