Dongshuo
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| 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 | Ref | 1 | 3 | 3.9 | 4.4 | 4.9 | 6.4 | 6.9 | |
| Insert depth (Max) | 0.85 | 1.4 | 1.4 | 1.9 | 2.4 | 2.6 | 3.1 | ||
| Insert depth (Min) | 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.
Special head design allows easy tightening or disassembly using a screwdriver, eliminating pre-punching, saving time and effort.
High-quality materials with galvanized surface treatment form a protective oxide film, providing excellent rust and anti-corrosion properties.
Composed of head, shaft, and threaded parts, the simplified design makes them easy to manufacture and straightforward to use.
Versatile use in mechanical equipment, building structures, furniture manufacturing, electronics, and aerospace fields.
The flat cross head engages better with base materials, offering higher load-bearing capacity and superior tensile/shear resistance.
