These lag bolts are made of zinc-plated steel. They have a hexagonal head and a partial coarse thread. Hex lag screws; also called a lag bolt; is a full-bodied threaded bolt with a hex head; spaced threads and a gimlet point. They are used mainly in wood construction. Zinc plating; retards the corrosion rate in a normal atmosphere.
- Hexagon.
- Coarse thread.
- Easy to use.