Anchors & Plugs

The Plastic Expansion Wall Plug (Rawlplug / Fischer S-Plug / Dowel) is a split cylindrical nylon or polyethylene sleeve inserted into a pre-drilled masonry hole. When a wood or sheet metal screw is driven inside, the tapered internal profile wedges the split halves outward, generating strong radial expansion friction against solid concrete, brick, or stone.

The Hollow Wall Anchor (Molly Bolt, patented by George F. Croessant in 1934) is an all-metal expansion fastener featuring a slotted steel sleeve that permanently crimps into 4 outward-flaring legs behind hollow drywall or plaster. Unlike toggle bolts, the anchor sleeve remains permanently clamped to the wall, allowing the machine screw to be removed and re-inserted repeatedly.

The Self-Drilling Drywall Anchor (EZ-Ancor / Zip-It / WallDog) is a wide-threaded, pointed nylon, zinc, or cast alloy anchor that drives directly into drywall sheets using a standard Phillips screwdriver without pre-drilling. Its deep, aggressive external threads bite into the gypsum core, providing fast and clean installation for lightweight wall fixtures.

The Concrete Sleeve Anchor (Dynabolt) is a versatile medium-to-heavy duty masonry anchor comprising an internal threaded bolt, a flared cone mandrel tip, and a full-length tubular expanding metal sleeve. As the bolt or nut is tightened, the cone is pulled into the sleeve, expanding it along its full length to grip securely in solid concrete, solid brick, hollow block, and stone.

The Toggle Bolt (Butterfly Anchor / Spring Toggle) is a two-piece hollow cavity anchor consisting of a long machine screw threaded through a spring-loaded dual-winged metal crossbar. When pushed through a pre-drilled wall hole, the wings snap open inside the hollow wall cavity, distributing heavy pull-out tension across the rear face of drywall, plaster, or hollow cinder block.

The Concrete Wedge Anchor (Through-Bolt / Expansion Stud Anchor / Trubolt) is a heavy-duty structural masonry fastener consisting of a solid threaded steel stud with a reverse-tapered conical mandrel and an independent stainless steel expansion clip collar. Driven into solid cured concrete, tightening the upper nut draws the mandrel up into the clip, locking the anchor permanently under thousands of pounds of structural load.