| 摘要 |
The invention relates to an anchor nut (1) that is made of fiber-reinforced plastic and comprises an internal thread (6) to be screwed onto a thread of an anchor (16). Said anchor nut (1) has external contours or shapes, by means of which the anchor nut (1) can be screwed onto an anchor winding with the help of a positively acting tool. One end of the anchor nut (1) is fitted with a first torque limiting means (7) which prevents a partially screwed-in anchor (16) from being further screwed in at a torque lying below a first torque limit, while the other end thereof is fitted with a second torque limiting means (8) that prevents torque from being further transmitted to the anchor nut (1) via the positively acting contours or shapes when a second torque limit has been reached or is exceeded. The first torque limiting means is formed by a pin (7) which penetrates the internal thread (6) perpendicular to the longitudinal axis of the anchor nut (1). The second torque limiting means are formed by at least two plastic projections (8) which are monolithically molded onto an external surface (9) of the anchor nut (1). The invention further relates to a tool (11) for screwing in such an anchor nut (1) as well as a method for driving an anchor (16) into a drill hole (15) by means of such an anchor nut (1).
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