| 摘要 |
PCT No. PCT/EP94/04037 Sec. 371 Date Jul. 26, 1996 Sec. 102(e) Date Jul. 26, 1996 PCT Filed Dec. 5, 1994 PCT Pub. No. WO95/16087 PCT Pub. Date Jun. 15, 1996In a large-area washer (1) there is an aperture for the insertion of a fastener and a bead (16) to stiffen the washer (1). To provide better engagement with a plate and/or web to be fastened, there are engagement components (13) on the underside of the washer (1) which are pressed out of the whole material of the washer (1) and project approximately perpendicularly downwards from it. The engagement components (13) are conical or truncated cones. |
