China Suppliers Factory Cross Galvanized Flat Head Self Tapping Screws for Fastener Processing
| 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 | Ctype | 2 | 2.6 | 3.2 | 3.7 | 4.3 | 5 | 6 | |
| F，FTtype | 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, cross large flat head self tapping 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 chemical surface treatment forming 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.
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 better engagement 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.