Boltmasters Bugle Batten Screws are designed for a range of applications such as fastening timber to timber, treated timbers and thin steel. The Type 17 point reduces the need to pre-drill (some hardwoods may require pre-drilling), whilst the bugle head with accompanying ribs aid in achieving a flush finish. The Type 17 point is a sharp, fluted point offering great timber penetration and drive when accompanied by a coarse biting thread, ultimately allowing for a quicker and cleaner install.