Quick view 1/2" X 18" Lag Screws, Hex Head, Steel Also known as a coach screws or heavy wood screws.Interchangeably referred to as lag screws or lag bolts.Used in heavy lumber applications, or in masonry when used with lag shields.Diameter (Nominal): 1/2"Thread Pitch: 6Diameter (Dimension): 0.5"Length... $235.79 Compare