T Nuts Four Pronged Tee Nuts Zinc Plated Steel Anchors Blind Nut Captive Inserts for Woodworking and Furniture Heavy Duty Threaded Wood Insert Nuts with Sharp Prong Pack of: 100 Size: M4 x 8mm

Worked really well rebuilding and bolting a wardrobe back together. Drilled a countersunk hole so the nut was flush when tightened. The prongs pulled easily into the wood when tightening the screws.

I ordered these based on the listing and the picture. The parts that arrived are nothing like what was in the picture. After a bit of cutting I managed to get them to fit. Pretty poor listing guys at SS8.