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China Hexagonal Self-Drilling Screws Factory - High Strength Fasteners Suppliers for Metal Applications
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China Hexagonal Self-Drilling Screws Factory - High Strength Fasteners Suppliers for Metal Applications
Hexagonal self-drilling screws are precision-engineered fasteners with hexagonal nuts, specifically crafted for applications that demand high torque and robust fixation. These screws, often preferred by many due to their superior fastening and tensile strength compared to traditional screws, are perfect for professionals in the construction and manufacturing sectors. Their self-tapping feature enables efficient drilling and tapping directly into materials, eliminating the need for pre-drilling. Commonly utilized in fastening metal and thin plate materials like steel structures and metal components, these screws are a reliable choice for various projects. As a leading supplier and factory in China, we guarantee the quality and durability of our hexagonal self-drilling screws to meet all your fastening needs.
Hexagonal drill screws are commonly used in places where mechanical fixing is required, such as carpentry, metalworking, and construction work. Their hexagonal head design makes them easier to secure with torque tools, such as a wrench or torque wrench, and less likely to break than other head designs. This type of screw can be used where it is necessary to ensure a firm fixation and where frequent tightening and loosening is required.
Thread Specifications
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
Max (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
Max (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
Drilling Depth
Range (mm)
0.7 - 1.9
0.7 - 2.25
1.75 - 3.0
1.75 - 4.4
1.75 - 5.25
2.0 - 6.0
Primary Functions & Applications
Fixation of Thin Plate Materials for Simple Buildings
Building Structure Reinforcement and Support
High-Quality Building Decoration Fixation
Precise Mechanical Equipment Fixation
Automotive Component Assembly & Security
Professional Installation in 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 plates, reinforcing structures, and assembling mechanical or automotive components.
QWhat thread specifications are available for these screws?
We offer a range from ST2.9 to ST6.3, with pitches ranging from 1.1 mm to 1.8 mm to accommodate different application requirements.
QWhy is a hexagonal head design preferred?
The hexagonal head provides better grip for torque tools like wrenches, distributing force evenly and reducing the risk of head stripping compared to other designs.
QWhat is the compatible sheet metal thickness?
It depends on the screw size; for example, ST2.9 is suitable for 0.7-1.9 mm, while ST6.3 can handle thicknesses from 2 mm up to 6 mm.
QAre these screws durable for repeated use?
Yes, their robust hexagonal geometry and high-quality threads are specifically designed to maintain holding strength even after multiple tightening and loosening cycles.
QWhat are the benefits of the color galvanized coating?
The coating provides superior corrosion resistance against rust and environmental wear, while also offering an aesthetic finish for visible architectural installations.
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