A screw, usually 1/4 inch in diameter or larger, with a hexagonal head that can be screwed in with an adjustable or socket wrench. Home Improvement Encyclopedia

A screw that produces compression on fixation because of partial threading (at the distal part of the screw)

A large screw, usually 4 inches or longer, with a hex head, turned with a wrench.

a heavy woodscrew with a square or hexagonal head that is driven in with a wrench

a large wood screw with a hexagonal head, driven by a wrench rather than a screwdriver

Heavy-duty wood screw. Used when needing a lot of holding power. Available with hex or square heads for wrenches or sockets.

A heavy screw for wood with a bolt head.

A large diameter wood screw with a square or hexagonal head.