| Grade | 4.8, 8.8, 10.9 |
| Surface Treatment | ZP |
Product Introduction
Standard Name: Tam Shield Anchor.
Common Names: Shield Anchor, Fish Scale Anchor, Three/Four-Piece Tam Anchor, Expanding Integral Shield Sleeve Anchor.
Product Definition: A heavy-duty, multi-piece (typically three- or four-piece) mechanically expanding anchor bolt. Its design utilizes internal expansion sleeves or “fish scale” plates to expand within concrete drill holes, forming powerful mechanical interlocking keys that deliver extremely high tensile and shear load-bearing capacities. Suitable for critical heavy-duty fastening applications.
Tam Anchor ZP Key Features
Zinc Plated (ZP): Provides basic rust protection and a bright silver finish, enhancing corrosion resistance,
suitable for indoor or slightly damp environments.
Expanding Shield Design: Composed of a tapered nut, expanding shield body, and bolts, it expands
evenly, providing high grip and pull-out resistance.
Material and Strength: Commonly made of carbon steel, high-strength design, suitable for medium to
heavy-duty fixing on solid substrates such as concrete and masonry.
Various Specifications: Diameter M6-M20, length 50-200mm, supports both projecting and loose bolts.
Advantages: Strong grip, detachable, economical and practical, simple installation, but requires precise
drilling.
Working Principle
Drilling Installation: Drill holes of matching diameter and depth in the substrate and insert the anchor bolt.
Expansion Process: When tightening the bolt, the tapered nut is pulled into the shield body, which
expands outward, gripping the hole wall tightly.
Load Distribution: Uniformly distributed expansion force provides balanced high grip; zinc plating
enhances corrosion resistance.
Fixing and Removal: Generates strong clamping force, allowing for removal by loosening bolts; the
principle involves mechanical expansion and frictional gripping.
Product Applications
Construction Engineering: Fixing steel beams, railings, or supports to concrete, providing
structural stability.
Industrial Installations: Secure heavy machinery, equipment bases, or pipes.
Residential and Commercial: Installing shelves, handrails, or signage; zinc plating is suitable for
indoor visibility.
Infrastructure: Bridge railings or light outdoor fixing.
General Heavy Duty: Any project requiring removable, high-strength anchoring.
