hollow screw is a type of threaded fastener or rod characterized by a hollow inner core, distinguishing it from solid screws. While retaining the external threading that allows it to secure or connect components (like traditional screws), its hollow design serves specific functional purposes:
Lightweight construction: The hollow core reduces overall weight, making it suitable for applications where weight reduction is critical, such as in aerospace or automotive parts.
Cable/pipeline integration: The hollow channel enables the passage of cables, wires, fluids, or other small components through the screw itself, optimizing space in compact mechanical systems.
Enhanced heat dissipation: In some cases, the hollow structure improves heat transfer, helping to cool components in high-temperature environments.
Hollow screws are widely used in construction (e.g., scaffolding), machinery, automation equipment, and precision engineering where both structural fastening and functional versatility are required.

