100Pcs Furniture Cams Lock Screws 3 in 1 Cams Connector Bolt Fittings Fasteners

Easy to Install: simply insert the component into the pre-drilled hole and fit the Cams lock nut. Make sure that the side grooves of the nut is aligns with that of the connecting rod, then turn the Cams fitting nut until it reaches angles of about 90 degrees.

eBay