- Lag bolts feature a hex head and are designed to be driven with a wrench or hex driver.
- Lag screws are also commonly called lag bolts because they are significantly larger than most other screws.
- Essentially, it is just a very large wood screw with the threads extending to the top.
- They feature the sharp cutting threads of a wood screw or sheet metal screw and have a shoulder below the head (in longer lengths), however everything is scaled up in size for use in larger applications.
- These screws typically need a pre-drilled whole and are not recommended as self-tapping.
