Securing light-to-medium structural framing, electrical trunking, or surface-mounted brackets onto hard concrete walls with weak plastic plugs is a major safety hazard—under continuous tension or environmental vibration, standard wall plugs easily pull out. The Ingco HWHA0606021 4-Piece Heavy-Duty Shell Anchor Set is engineered to provide an unyielding, industrial-grade mechanical hold inside dense masonry substrates. Featuring an M6 internal thread sizing footprint and an overall depth profile of 60mm, these precision-engineered expansion shield anchors grip concrete, solid brickwork blocks, and stone 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 during installation, the internal cone wedge is drawn into the expanding split outer sleeves, locking the three-piece shell outward against the interior walls of the pre-drilled masonry channel. This specialized mechanical layout distributes stress evenly throughout the substrate, preventing pull-out failures under heavy loading pressures. To resist weathering and oxidation in damp outdoor setups, garage walls, or wet building foundations, each piece features a high-grade zinc rust-resistant finish. Packaged as a clean 4-piece structural hardware set, it stands as the ideal solution for robust, permanent fixtures!

Technical Specifications

• Brand: INGCO

• Model: HWHA0606021

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

• Total Set Quantity: 4 Pieces Per Retail Pack Configuration

• Anchor Internal Thread Sizing: M6 Metric Thread Sizing (1/4 Inch Equivalence Layout)

• Total Anchor Length Profile: 60mm 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: Mounting electrical distribution boxes to block walls, securing plumbing pipes, fixing metal brackets, anchoring light garage shelving units, and installing external gate railings

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