Abstract: A masonry anchor includes a head and a body integral to the head and extending therefrom. At least one helical male thread surrounds the body and includes a leading face and a trailing face substantially perpendicular to the body disposed between the leading face and the head. The trailing face intersects the leading face at a thread crest.

Abstract: A drop-in anchor system includes a drop-in anchor having a tubular sleeve with a first end and an expandable second end. The sleeve tapers in inner diameter from the first end to the second end at a sleeve taper angle. The drop-in anchor includes a plug insertable in the sleeve such that when the plug is driven into an installed position in the sleeve the second end expands. The plug tapers at a plug taper angle from a head end to a tip end and a difference between the sleeve taper angle and the plug taper angle is about one degree or more. The system includes an installation tool configured to form a hole in a workpiece into which the drop-in anchor is insertable and to drive the plug into the installed position in the sleeve.

Abstract: A drop-in anchor includes a tubular sleeve having a first end and an expandable second end. The sleeve tapers in inner diameter from the first end to the second end at a sleeve taper angle. A plug is insertable in the sleeve such that when the plug is driven into an installed position in the sleeve the second end expands. The plug tapers at a plug taper angle from a head end to a tip end. A difference between the sleeve taper angle and the plug taper angle is about one degree or more.

Abstract: An anchor stud includes a stud portion including a body portion having a first end that extends to a second end though an intermediate portion. A wedge member is operatively coupled to the second end of the stud portion. The wedge member includes a body having a generally frustoconical profile and is formed from a material having a Vickers hardness of between about 218 HV and about 290 HV. A sleeve element is positioned on the stud portion at the second end adjacent the wedge member. The sleeve element is formed from a material having a Vickers hardness of between about 218 HV and about 290 HV.