What type of thread pattern does a lag-threaded rod have?

A lag-threaded rod typically has a coarse thread pattern. This design allows for better gripping in wood and provides greater holding power than finer threads, which can strip out easily in softer materials. The coarse threads are spaced further apart, ensuring that the rod can be driven into a surface without requiring excessive force and making it easier to create a secure connection.

Lag screws, which often use lag-threaded rods, are commonly used in heavy-duty applications where strength and durability are essential, such as in tree support systems or structures requiring stabilization against wind and other forces. The unique characteristics of coarse threads enable them to anchor firmly into wooden structures, which is critical when addressing the challenges of tree support and the added stress associated with varying weather conditions.