High-Strength Expansion Wedges & Anchor Bolts Sizes & Applications Guide

(expansion wedge)

Technical Superiority: How Expansion Wedges Outperform Conventional Anchors

While standard anchors rely on friction alone, our wedge expansion bolts create mechanical interlock through controlled radial expansion. See the difference:

Metric	Standard Bolt	Wedge Expansion Bolt
Shear Strength (kN)	24.5	38.9
Installation Time	12-15 mins	4-7 mins

Manufacturer Showdown: Why Our Expansion Anchor Bolt Sizes Dominate

We offer 14 standard expansion bolt sizes from M6 to M24, plus custom diameters. Compare key specs:

• ✓ M12: 18kN pullout (vs. 9.5kN industry avg)
• ✓ Zinc-nickel coating (2400h salt spray resistance)
• ✓ 0.02mm tolerance precision

Tailored Solutions: When Off-the-Shelf Expansion Bolts Won’t Cut It

Last quarter, we engineered hexagonal wedge anchors for a suspension bridge requiring 56kN/cm² load capacity. Your challenge? Our blueprint.

(expansion wedge)

FAQS on expansion wedge

Q: What is an expansion wedge used for?

A: An expansion wedge is a mechanical fastener designed to secure objects to concrete, masonry, or similar materials. It expands when tightened, creating a firm grip within the pre-drilled hole. It's commonly used in construction and heavy-duty applications.

Q: How do I choose the right expansion bolt size?

A: Expansion bolt sizes depend on the load requirements and the material thickness. Common sizes range from M6 to M20 in metric measurements. Always check the manufacturer’s guidelines for load capacity and hole diameter compatibility.

Q: What are standard expansion anchor bolt sizes?

A: Standard expansion anchor bolt sizes typically include diameters like 1/4", 3/8", 1/2", and 5/8" in imperial units. Metric equivalents often range from M8 to M16. Size selection depends on the application’s structural needs.

Q: Can expansion wedges be reused after installation?

A: No, expansion wedges are single-use fasteners. Their expansion mechanism deforms the sleeve or wedge during installation, making removal irreversible. Reinstalling requires a new anchor and a fresh hole.

Q: What materials are expansion wedges made from?

A: Expansion wedges are typically made from carbon steel, stainless steel, or zinc-plated steel. Stainless steel variants offer corrosion resistance, making them ideal for outdoor or high-moisture environments.

Q: How deep should a hole be for an expansion anchor bolt?

A: The hole depth should exceed the anchor’s length by 5-10mm to accommodate debris. For example, a 100mm anchor requires a 105-110mm hole. Always follow the manufacturer’s specifications for optimal performance.

Q: Are expansion wedges suitable for overhead installations?

A: Yes, expansion wedges can be used overhead if installed correctly. Ensure the hole is clean, and the anchor is fully seated and tightened. Verify load ratings to confirm suitability for dynamic or static overhead loads.