China Suppliers Factory Custom Cross Galvanized Flat Head Self-Tapping Screws Fastener Production Process
| 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 | ||
The cross large flat head self tapping screws are made of high-strength materials, which 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.
Cross shaped flat head self tapping screws are usually made of high-quality materials, and the surface is chemically treated to form a black galvanized oxide film, which has good rust and anti-corrosion effects and can be used for a long time in harsh environments.
Composed of the head, shaft, and threaded parts, easy to manufacture and use.
It has a wide range of applications in mechanical equipment, building structures, furniture manufacturing, electronic products, aerospace and other fields.
The flat cross shaped head allows the cross shaped flat head self tapping 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, reducing the possibility of loosening.