Types of Bolts Used in Construction There are several common types of fastener used in construction for connecting structural elements. Each type has its own strengths and suits different applications. Lag Bolts Lag fastener, also called coach fastener, are most often used to fasten wood to concrete or masonry. They feature a hexagonal head on one end and threads on the other ... https://www.newswirestats.com/bolts-size-and-share-trends-growth-demand-forecasts/