Overview

These are high-quality, high-strength drop-in expansion anchor bolts manufactured from Carbon Steel to an 8.8 grade standard, providing superior tensile strength and durability. They are designed for reliable and secure anchoring into solid concrete. Available in common metric sizes like M6, M8, and M10, these anchors are typically finished with a zinc plating (often blue or yellow) to offer good corrosion resistance for internal applications in dry to moderately humid environments. Their design allows for a flush, tamper-resistant installation, making them ideal for demanding fastening applications.

Definition

High-strength Grade 8.8 carbon steel drop-in anchor bolts are female concrete anchors precision-engineered from carbon steel with a tensile strength rating of 8.8, signifying their robust mechanical properties. These anchors feature internal threading (e.g., M6, M8, M10) and an integral expansion cone. After being inserted flush into a pre-drilled hole in concrete, a specialized setting tool is employed to drive the internal cone upwards, causing the anchor’s body to expand and create a powerful, positive interlock with the concrete. A zinc plating provides a protective layer against corrosion in suitable environments.

Advantages

• High Strength (Grade 8.8): Offers significantly higher tensile and shear strength compared to standard anchors, making them suitable for heavy-duty and critical applications.
• Durable Carbon Steel: Provides excellent hardness and wear resistance, contributing to a secure and long-lasting connection.
• Versatile Metric Sizes: Available in M6, M8, and M10, accommodating a wide range of threaded rods and bolts for various load requirements.
• Zinc Plated Protection: The zinc coating enhances corrosion resistance, extending the anchor’s lifespan and maintaining performance in non-aggressive indoor environments.
• Flush and Tamper-Resistant: Installs flush with the concrete surface, providing a clean finish and making it difficult to tamper with or remove the anchor after setting.
• Reliable Expansion: Designed for consistent and strong expansion, ensuring a secure grip within the concrete, which is critical for safety and load bearing.

Applications

• Heavy Duty Overhead Suspension: Ideal for suspending heavy fixtures, such as large HVAC ducts, major electrical trunking, and fire suppression mains from concrete ceilings.
• Structural Steel Anchorage: Used for non-primary structural connections, such as tying down light steel sections or secondary framing to concrete slabs or beams.
• Machinery and Equipment Securing: Provides robust anchoring for machinery bases, industrial equipment, and heavy-duty racking systems to concrete floors.
• Safety Barrier and Guardrail Installation: Critical for securing safety barriers, guardrails, and handrailing posts where high pull-out and shear strength are paramount.
• Stadium Seating and Public Fixtures: Used to install robust seating, benches, and other public fixtures in concrete stadium or arena settings.
• Precast Concrete Panel Connections: Can be used in conjunction with other fastening methods to secure precast concrete elements.