Machine Screw Anchors

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Machine Screw Anchors is an anchoring device consisting of an internally threaded conical expander.

This anchor is designed with some means (ie. ribs or knurls) to prevent it from turning during expansion; and an expansion sleeve which slips over the expander. The outer walls of the sleeve can be either, straight, cylindrical or tapered, and the surface either smooth or corrugated. A spherical steel lock washer at the top of the expansion sleeve is optional.

A caulking type anchor which provides a quick setting in brick, concrete or stone. The lead shield's malleability enable it to fill uneven or irregular spots in the hole. When tamped, the expansion sleeve holds the expander inside the hole in the masonry, equally distributing the load around the anchor. Fixtures can be removed or replaced without sacrificing holding power.