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 |
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 |
| r |
Min |
0.1 |
0.1 |
0.2 |
0.2 |
0.25 |
0.25 |
| Drilling depth or sheet metal thickness |
Min |
0.7 |
0.7 |
1.75 |
1.75 |
1.75 |
2 |
| Max |
1.9 |
2.25 |
3 |
4.4 |
5.25 |
6 |
Its Functions & Applications
⚙️
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
Q1: What are hexagonal self-drilling screws best used for?
A: These screws are ideal for mechanical fixing in carpentry, metalworking, and construction projects where a firm, secure hold is required.
Q2: Why is the hexagonal head design preferred?
A: The hexagonal head allows for higher torque application using wrenches or power tools, significantly reducing the risk of head breakage compared to other designs.
Q3: Can these screws be used for metal-to-metal applications?
A: Yes, they are specifically designed for building structures, automotive assembly, and fixing thin plate materials, including metal sheets.
Q4: What thread specifications are available for this product?
A: Our technical specifications cover a wide range from ST2.9 up to ST6.3 to accommodate various drilling depths and material thicknesses.
Q5: Are these screws suitable for areas requiring frequent disassembly?
A: Yes, their robust hexagonal design is excellent for applications where frequent tightening and loosening are necessary without damaging the screw head.
Q6: Do these screws require pre-drilling?
A: These are self-drilling screws, designed to create their own hole as they are driven into materials like sheet metal or wood, saving time during installation.
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