Product Description
Claw anchor bolts are essential embedded fasteners for heavy-duty equipment, steel structures, bridges, and building foundations. The anchor claw design at the bolt tip significantly increases the contact area with concrete and enhances mechanical interlocking, converting vertical tensile forces into a multi-directional shear resistance system. These bolts offer exceptional resistance to pull-out, seismic forces, and vibrations, ensuring the stability and safety of equipment and structures under long-term heavy loads and dynamic loads. Anchor claw anchor bolts are widely used in foundation anchoring applications such as machine tools, compressors, towers, pipelines, curtain walls, and lifting equipment.
Product Overview
- Product Name: Anchor Claw Anchor Bolts / Claw-Type Anchor Bolts / Multi-Claw Anchor Bolts
- Aliases: 4-Claw Anchor Bolts, 6-Claw Anchor Bolts, Umbrella-Claw Anchor Bolts, Welded Claw-Type Anchor Bolts
- Standards: Custom-made to non-standard specifications; can be manufactured according to drawings
- Common Strength Grades: Grade 4.8 / Grade 5.8 / Grade 8.8
- Materials:
Shank: Q235B, Q355B (Q345B), 45# steel
Anchor Claws: Q235B steel plate
- Surface treatment: Natural finish, blackened, electrogalvanized, hot-dip galvanized
- Structure: One end of the shank is threaded, while the other end is welded with multiple anchor claws (4 claws / 6 claws); designed for embedding in concrete
Product Features
- Multi-claw anchoring structure with exceptional pull-out resistance: The claws of the cat's-paw anchor spread outward, providing a large contact area with the concrete and distributing stress evenly. This design offers excellent resistance to pull-out, vibration, and overturning, making it ideal for heavy-duty, high-load foundations.
- Secure welding and high overall strength: The anchor claws are fully welded to the anchor rod, preventing detachment or breakage and ensuring long-term load-bearing safety and reliability.
- Convenient Pre-embedding and Positioning: The claw-type structure provides excellent stability within concrete, making it easy to secure during pre-embedding and ensuring high installation precision.
- Corrosion-Resistant and Durable: The product can undergo hot-dip galvanizing to enhance its rust and corrosion resistance, making it suitable for outdoor, open-air, humid, and coastal environments.
- Flexible Sizing: Bolts are customizable; the shank diameter, length, number of claws, claw width, and claw thickness can all be tailored to specifications.
Applications
- Heavy-duty steel structures, steel columns, and foundations for overhead cranes and cranes
- Bases for large machine tools, fans, pumps, motors, and compressors
- Foundations for power transmission towers, communication towers, wind turbine towers, and tower cranes
- Bridges, port machinery, billboards, and solar panel mounting structures
- Heavy-load projects with extremely high requirements for anchoring force and stability
Table of Common Dimensions (for reference) (Unit: mm)
|
Screw Specifications d |
Pitch P |
Common Thread Length |
Anchor Claw Type |
Common Overall Length L |
|
M12 |
1.75 |
40–50 |
4 Claw |
300–600 |
|
M16 |
2.0 |
50–60 |
4 Claw |
400–800 |
|
M20 |
2.5 |
60–70 |
4 Claw / 6 Claw |
500–1000 |
|
M24 |
3.0 |
70–80 |
4 Claw / 6 Claw |
600–1200 |
|
M27 |
3.0 |
80–90 |
4 Claw / 6 Claw |
700–1500 |
|
M30 |
3.5 |
90–100 |
4 Claw / 6 Claw |
800–1500 |
|
M36 |
4.0 |
100–120 |
4 Claw / 6 Claw |
1000–2000 |
|
M42 |
4.5 |
120–140 |
6 Claw |
1200–2500 |
|
M48 |
5.0 |
140–160 |
6 Claw |
1500–3000 |
FAQ
What is the difference between anchor claw anchor bolts and standard straight-shank bolts?
Standard straight-shank bolts rely on concrete bond strength; anchor claw bolts rely on mechanical interlocking + bond strength, providing over 47% greater pull-out resistance and superior seismic and vibration resistance.
How do I select the right type?
Select the type, material, and specifications based on equipment weight, load, vibration, embedment depth, concrete strength, and environmental conditions.
Do you offer custom manufacturing?
Yes. Please provide the required images and specifications; minimum order quantities are flexible.
How do I choose the surface treatment?
For indoor use, choose blackening; for standard outdoor use, choose electrogalvanized; for heavy corrosion or outdoor use, choose hot-dip galvanized or Dacromet.
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