Wedge anchors are post-installed expansion anchors used in solid concrete. They are common in base plates, pipe supports, equipment brackets, railings, steel frames, and light-to-medium structural fixing.

For buyers, the key point is simple: wedge anchor size is not only the diameter. Length and embedment depth are just as important. If any of these are wrong, the anchor may not seat properly, the nut may not engage fully, or the concrete connection may not reach the expected capacity.

Key Wedge Anchor Dimensions

A wedge anchor is usually defined by diameter and overall length. However, project buyers should also confirm thread length, fixture thickness, required embedment, and installation clearance.

For general sourcing, buyers can review standard fastener options under standard fasteners.

Diameter Selection

Match the Load and Hole Requirement

Larger diameters usually provide higher potential load capacity, but only when concrete strength, edge distance, spacing, and embedment are suitable.

Do not select diameter only by the hole in the base plate. Confirm:

• Concrete strength
• Tension or shear load
• Edge distance
• Anchor spacing
• Fixture hole size
• Required approval or project standard

For load-bearing installations, review high-strength fasteners and confirm engineering requirements before ordering.

Length and Embedment Depth

Overall length must be long enough to pass through the fixture and still reach the required embedment in concrete.

A practical calculation is:

Anchor length = fixture thickness + required embedment + washer/nut allowance + thread projection

If the anchor is too short, embedment may be insufficient. If it is too long, installation may be difficult or unnecessary cost may increase.

Common Selection Mistakes

Avoid these issues:

1. Ordering by diameter only.
2. Ignoring fixture thickness.
3. Confusing overall length with embedment depth.
4. Using wedge anchors in weak or unsuitable concrete.
5. Placing anchors too close to concrete edges.
6. Forgetting washer and nut requirements.
7. Choosing coating without checking thread fit.

For outdoor or humid environments, compare coating options under various coated fasteners.

RFQ Checklist for Wedge Anchors

Before requesting a quotation, provide:

• Anchor diameter and length
• Длина нити
• Fixture thickness
• Required embedment depth
• Concrete strength and condition
• Load direction: tension, shear, or combined
• Surface finish or coating
• Nut and washer requirements
• Required test reports or certificates

For unusual dimensions or project-specific anchor designs, use custom non-standard fasteners and provide drawings.

Final Advice

Wedge anchor size should be selected by installation conditions, not by diameter alone. Confirm diameter, length, embedment depth, fixture thickness, concrete condition, and coating before production.

A complete RFQ helps avoid wrong anchors, weak installation, and costly jobsite rework.