A fuel assembly comprising: a bundle of fuel rods comprising fissile material; and a spacer grid securing the fuel rods of the bundle together, the spacer grid having a top and a bottom and a mid-plane, wherein the mid-plane is midway between the top and the bottom, and including a plurality of cells comprising passages from the top to the bottom of the spacer grid through which fuel rods pass, the cells including: upper dimples disposed proximate to the top of the spacer grid and distal from the mid-plane of the spacer grid, lower dimples disposed proximate to the bottom of the spacer grid and distal from the mid-plane of the spacer grid, upper cantilevered springs having cantilevered free ends located above the mid-plane of the spacer grid, and lower cantilevered springs having cantilevered free ends located below the mid-plane of the spacer grid, wherein the upper cantilevered springs of each cell bias the fuel rod passing through the cell against the upper dimples of the cell and the lower cantilevered springs of each cell bias the fuel rod passing through the cell against the lower dimples of the cell, and wherein none of the dimples contact a fuel rod at the mid-plane of the spacer grid, and none of the springs contact a fuel rod at the mid-plane of the spacer grid. a bundle of fuel rods comprising fissile material; and a spacer grid securing the fuel rods of the bundle together, the spacer grid having a top and a bottom and a mid-plane, wherein the mid-plane is midway between the top and the bottom, and including a plurality of cells comprising passages from the top to the bottom of the spacer grid through which fuel rods pass, the cells including: upper dimples disposed proximate to the top of the spacer grid and distal from the mid-plane of the spacer grid, lower dimples disposed proximate to the bottom of the spacer grid and distal from the mid-plane of the spacer grid, upper cantilevered springs having cantilevered free ends located above the mid-plane of the spacer grid, and lower cantilevered springs having cantilevered free ends located below the mid-plane of the spacer grid, wherein the upper cantilevered springs of each cell bias the fuel rod passing through the cell against the upper dimples of the cell and the lower cantilevered springs of each cell bias the fuel rod passing through the cell against the lower dimples of the cell, and wherein none of the dimples contact a fuel rod at the mid-plane of the spacer grid, and none of the springs contact a fuel rod at the mid-plane of the spacer grid. upper dimples disposed proximate to the top of the spacer grid and distal from the mid-plane of the spacer grid, lower dimples disposed proximate to the bottom of the spacer grid and distal from the mid-plane of the spacer grid, upper cantilevered springs having cantilevered free ends located above the mid-plane of the spacer grid, and lower cantilevered springs having cantilevered free ends located below the mid-plane of the spacer grid, wherein the upper cantilevered springs of each cell bias the fuel rod passing through the cell against the upper dimples of the cell and the lower cantilevered springs of each cell bias the fuel rod passing through the cell against the lower dimples of the cell, and wherein none of the dimples contact a fuel rod at the mid-plane of the spacer grid, and none of the springs contact a fuel rod at the mid-plane of the spacer grid.