Nuclear reactor fuel assembly

Claim 1

Nuclear reactor fuel assembly with two support plates and a holding rod connecting the two support plates rigidly with mutual spacing, the holding rod having a longitudinal axis passing through both support plates, and being held at one end in a lead-through in one of the two support plates, said one support plate being formed of a single plate, comprising, in the lead-through, an elongated holding body for receiving the holding rod therein, said holding body having a longitudinal axis coinciding with that of the lead-through and being rotatable about the longitudinal axis thereof and displaceable in a direction of the longitudinal axis thereof; said lead-through being formed with a stop shoulder at an outer side of the one support plate, said stop shoulder being spaced from a first holding shoulder in the axial direction of said lead-through; means for rotating said holding body or the holding rod relative to one another about said longitudinal axis so as either to connect said holding body rigidly to an end of the holding rod and tighten it against a second holding shoulder formed in the one support plate or so as to detach said holding body, from the holding rod; said second holding shoulder, as viewed in a direction of said longitudinal axis of the holding rod, being located between said stop shoulder and the other side of said one support plate; and a spring element braced against said stop shoulder and pressing said holding body elastically against said holding shoulder; said spring element being braced at one end thereof against said stop shoulder and, at the other end thereof, against said first holding shoulder at the outside of said holding body.