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| Specification | Description | Details |
|---|---|---|
| Type | Truss Head Self-Tapping Screw | A screw with a truss head that can form its own thread in a pre-drilled hole without tapping. |
| Head Style | Truss (Hollow) Head | A hollow head designed to reduce weight and increase torque efficiency. |
| Drive Type | Phillips, Slotted, Hex Socket, etc. | Commonly Phillips for self-tapping screws. |
| Material | Carbon Steel, Stainless Steel (e.g., 304, 316) | Affects strength, corrosion resistance, and appearance. |
| Grade | 4.8, 8.8, 10.9, etc. | Indicates mechanical properties and load-bearing capacity. |
| Diameter (d) | M2 to M12 | The nominal diameter of the screw thread. |
| Length (L) | 5mm to 200mm | The overall length of the screw. |
| Thread Pitch (P) | Coarse, Fine, or Extra-Fine | Distance between threads affecting fastening grip. |
| Finish | Zinc Plated, Black Oxide, Phosphated, etc. | Surface treatment for protection and aesthetics. |
| Standards | ISO, ASTM, GB, etc. | Manufacturing and testing standards for reliability. |






The company is one of the world's leading fastener production and export bases. We specialize in producing all kinds of high-strength fasteners, with a monthly production capacity of 800 tons.
We mainly provide construction fasteners which includes high quality bolt, nut, screw and non-standard fastener in accordance with GB, DlN, ISO, ANSI/ASTM / SAE / IFI, AS, BS, UNI, JIS. These are applied to architectural steel structures, bridges, oil pipeline, machinery equipment, furniture, vessel, railway, and exported globally.
The company has been certificated by ISO9001. We operate each link from raw materials procession to production in strict accordance with quality procedures using perfect testing equipment.









| Method | Destination | Estimated Time | Packaging |
|---|---|---|---|
| Ocean shipping | North/South America | About 40 working days | Boxes, cartons or plastic bags |
| Ocean shipping | Eastern Europe | 30-40 working days | As per customer needs |
| Ocean shipping | Southeast Asia | 20-30 working days | Standard export packing |
| Air transport | Global | 1-3 business days | Secured packaging |
WEX Medical