| 摘要 |
The nail is fixed to the casing (2) via a membrane or bridge (7) which is broken when the nail is driven into a soft material or a pre-drilled hole. - In the undeformed state, the nail projects out of a hollow space (8) to an extent corresp. to more than a quarter of its length. The nail has a conical cross-section with a polygonal connecting curve. |
