| 摘要 |
A screw (11) which can fix plaster board in a braced plaster board lined structure has an enlarged head portion (12) having a diameter (D), which is at least 9.5mm, and preferably at least 10mm, or possibly greater. The screw (11) has a shank (13) which is threaded. The thread of the shank (13) may extend the entire or only part of the length between the head portion (12) and the point (16). |
