Ingco 4-Piece Heavy-Duty 5/16 Inch Shell Anchor Expansion Bolt Set - Zinc-Plated Carbon Steel Concrete Shield Anchors Pack (HWHA0809531)

Securing heavy machinery, structural framing, or structural gate posts onto hard concrete surfaces with weak, standard wall plugs is incredibly dangerous—under heavy vibration or continuous loads, light fasteners pull out easily, leading to equipment failure. The Ingco HWHA0809531 4-Piece Heavy-Duty Shell Anchor Set is engineered to provide an unyielding, high-load mechanical hold inside hard masonry substrates. Featuring a robust 5/16-inch (M8 internal thread sizing thread layout), 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: HWHA0809531

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

• Total Set Quantity: 4 Pieces Per Retail Pack Configuration

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

• 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