China Suppliers Factory Cross Galvanized Flat Head Self Tapping Screws - Fastener Processing and Customization
| Thread specifications d |
ST2.2 | ST2.9 | ST3.5 | ST4.2 | ST4.8 | ST5.5 | ST6.3 | ||
| P | Pitch | 0.8 | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |
| a | Max | 0.8 | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |
| dk | Max | 3.7 | 5.3 | 6.64 | 7.64 | 9.14 | 10.57 | 11.57 | |
| Min | 3.4 | 5 | 6.28 | 7.28 | 8.78 | 10.14 | 11.14 | ||
| k | Max | 1.6 | 2.4 | 2.6 | 3.1 | 3.7 | 4 | 4.6 | |
| Min | 1.4 | 2.15 | 2.35 | 2.8 | 3.4 | 3.7 | 4.3 | ||
| dc | h15 | Max | 5 | 7 | 8 | 9 | 10 | 12.5 | 14 |
| Min | 4.52 | 6.42 | 7.42 | 8.42 | 9.42 | 11.8 | 13.3 | ||
| s | Min | 0.3 | 0.5 | 0.8 | 0.8 | 0.8 | 1 | 1 | |
| y | C type | 2 | 2.6 | 3.2 | 3.7 | 4.3 | 5 | 6 | |
| F，FT type | 1.6 | 2.1 | 2.5 | 2.8 | 3.2 | 3.6 | 3.6 | ||
| Slot Number | 0 | 1 | 2 | 2 | 2 | 3 | 3 | ||
| M | ≈ | 1 | 3 | 3.9 | 4.4 | 4.9 | 6.4 | 6.9 | |
| Insert depth / maximum | 0.85 | 1.4 | 1.4 | 1.9 | 2.4 | 2.6 | 3.1 | ||
| Insert depth / minimum | 1.2 | 1.8 | 1.9 | 2.4 | 2.9 | 3.1 | 3.6 | ||
Made of high-strength materials, these screws can effectively tighten different components together and maintain the stability of the equipment.
With its special head design, it can be easily tightened or disassembled using a screwdriver, saving the step of pre punching, making it more convenient to use and time-saving.
Made of high-quality materials with a chemically treated surface that forms a black galvanized oxide film, providing excellent rust and anti-corrosion effects for long-term use in harsh environments.
Composed of the head, shaft, and threaded parts — easy to manufacture and use.
Broadly used in mechanical equipment, building structures, furniture manufacturing, electronic products, aerospace, and many other fields.
The flat cross shaped head allows the screw to better engage with the base material, making the connection more stable and reliable, with greater load-bearing capacity and better tensile and shear resistance than traditional screws.
The flat cross shaped head makes the connection more stable and reliable, significantly reducing the possibility of loosening.