Product Details
Double expansion machine screw anchors are designed for anchoring into concrete, brick, or block base material. Inserting a machine-threaded bolt into the anchor expands it against the concrete at two points. These anchors are made from Zamac alloy, a non-rusting material, and are intended to be set flush with the base material. They are considered a light to medium-duty fastener. The kit includes easy bolt installation/removal, corrosion resistance, internally threaded design, and dual cone expansion.
