Securing structural framing, heavy machinery, or load-bearing wall brackets onto hard concrete surfaces with standard light-duty plastic wall plugs is highly risky—under continuous loading or vibration, standard fasteners pull out easily, risking equipment damage and failure. The Ingco HWHA0807521 4-Piece Heavy-Duty Shell Anchor Set is engineered to provide an unyielding, high-load mechanical hold inside dense masonry substrates. Featuring an M8 internal thread sizing footprint and an overall length profile of 75mm, these heavy-duty expansion shield anchors grip concrete walls, structural floors, and solid brickwork blocks with massive outward holding force.

The immense pulling resistance of these anchors comes from their heavy-duty zinc-plated carbon steel shell configuration. When the hex nut is tightened, the internal cone wedge is pulled into the expanding split outer sleeves, locking the three-piece shell outward against the inner walls of the pre-drilled concrete channel. This specialized mechanical layout distributes stress evenly throughout the masonry substrate, preventing pull-out failures under heavy loading pressures. To resist weathering and oxidation in damp basement settings or outdoor structural framing applications, each piece features a high-grade zinc rust-resistant finish. Packaged as a clean 4-piece structural set, it stands as the ideal hardware solution for securing workshop equipment, storage racking, or safety handrails!

Technical Specifications

• Brand: INGCO

• Model: HWHA0807521

• Product Type: Heavy-Duty Shell Expansion Shield Anchor Bolt Set

• Total Set Quantity: 4 Pieces Per Retail Pack Configuration

• Anchor Internal Thread Sizing: M8 Metric Thread Sizing (5/16 Inch Equivalence Layout)

• Total Anchor Length Profile: 75mm Deep Fixation Sizing

• Material Composition: Industrial-Grade Forged High-Strength Carbon Steel Core

• Surface Protection Finish: Advanced Rust-Resistant Yellow/Silver Zinc Plating for outdoor atmospheric protection

• Anchor Architecture Layout: Three-segment heavy expansion shell with high-friction external ribbing and internal pull-cone wedge

• Fastener Type: Hex head nut integration with loose structural washers included for immediate installation

• Primary Target Substrates: Poured structural concrete foundation pads, natural solid stone slabs, dense building bricks, aggregate concrete blockwork, and hard mortar beds

• Primary Applications: Anchoring industrial workshop machinery to concrete flooring, hanging structural steel beams, securing heavy storage racks, mounting outdoor steel security gates, and setting up overhead structural rigging points

• Packaging Type: Supplied securely packed inside a commercial double blister hanging display card layout for thread edge safety and organized retail shelving