Set of four pegs with a 7mm peg at 4.9mm diameter. These were produced to repair an old bookcase. I've made them available in case anyone else needs to do similar things, and as they are a trivial shape.
Check carefully that they will bear the weight you are putting on them - they are not stress tested.
2.2 w x
3.14 d x
0.866 w x
1.236 d x