Adhesive can also be used for improving the bond of metal connectors. A glue nail is a common connector used in machine nailing nowadays. Metal rods glued into grooves milled in lamellae improve the bending characteristics of glued laminated timber.
Tie bars protruding from the ends of a glued laminated pillar or beam can be fastened, for example, to concrete or welded to steel structures. Glued screws are a good and commonly used method for fastening massive wood components to each other. No adhesion is needed between the adhesive and metal rod, but the mechanical bond between the thread of the metal rod and the wood strengthened by the adhesive is sufficient.
Glued screw connections are also well suited to various corner connections of wood beams.