Ikea 110912 (Svalbo Dual-End Nut Sleeves)

thingiverse

I misplaced the part that secures the bolts for the leg and created a replacement myself. It won't match the original's strength but metal bolts often slip right through thread stops on completion. This makeshift solution is ideal if you have a 3-legged table now, which can be easily extended to 4 legs with this temporary fix. I had it printed locally without knowing the print settings or printer used, only that the material was Onyx.