| 摘要 |
The dowel is manufactured from a metal sheet blank. It comprises a collar (1), a material drilling end (2) and, between the collar (1) and the drilling end (2), an expandable tubular body (3), having the part thereof (8) adjacent to the collar (1) comprising internal bosses (18) for rotationally driving the dowel and the drilling end thereof. The dowel should receive an element for securing a part to the supporting material while resulting in the expansion of the body (3) and the anchoring of the dowel into the supporting material. |
