Wood to Wood Dowel Screw
Dowel screws are lag threaded dowels (studs) used to fasten two pieces of wood. Like typical studs, they are headless, double-ended screws but have wood screw threads at both ends.

Dowel screws are lag threaded dowels (studs) used to fasten two pieces of wood. Like typical studs, they are headless, double-ended screws but have wood screw threads at both ends.