Structural vs. Lag Screws

This article is a guide explaining when to use lag screws or structural screws. The advantages of structural screws are that they are easier to use and stronger. Structural screws don't require pre-drilling, unlike lag screws, or bolts, which require the drilling of two pilot wholes. Construction engineers and developers wondering when to use structural screws or lag screws need to take into account the cost of structural screws against the added labor costs of lag screws. A design guide and tables for structural screws and lag screws is included. Article also includes a lag screw calculator.