CONFAST 5/8 in x 6 in Galvanized Wedge Anchor (Box of 20) - Concrete

Our review of the CONFAST 5/8 in x 6 in Galvanized Wedge Anchor finds it best suited for contractors, framers, and DIYers who need a simple, durable concrete fastener. The single biggest reason to buy is its practical balance of heavy-duty galvanized carbon-steel construction and complete hardware packaging, which lets installers set anchors quickly without hunting down separate nuts and washers. This review focuses on real installation details, environmental suitability, and whether the anchors deliver reliable hold in concrete work.

Key Features

• Galvanized finish: The zinc-coated carbon-steel helps prevent rusting in damp environments so anchors hold longer when exposed to moisture.
• Complete kit: Each anchor is packaged with matching nuts and washers for a fast, complete installation without sourcing extra parts.
• Concrete-only design: Engineered specifically for use in concrete, the wedge expansion mechanism provides strong load transfer when installed to the recommended embedment.
• Straightforward sizing: The hole diameter equals the anchor diameter so ordering and drilling are simpler for busy job sites and less prone to bit mismatch.
• Long thread run: Four inches of threads let installers adjust and clamp a range of material thicknesses without sacrificing embedment.

Who It's For

The CONFAST wedge anchors are ideal for professionals and experienced DIYers who anchor structural or heavy-duty attachments to poured concrete, such as attaching treated lumber, steel plates, or building supports. The box of 20 suits small to medium jobs or maintenance teams that prefer buying anchors in ready-to-use batches.

Those who need anchors for block, brick, or hollow base materials should look elsewhere, as these are designed for concrete only. Also, if you require stainless hardware for long-term marine exposure, a stainless anchor would be a better choice than the galvanized finish.

Pros & Cons

Pros

• Galvanized coating offers corrosion resistance for damp conditions and improves long-term value.
• Packaged with nuts and washers so installations are faster and fewer trips to the supplier are required.
• Clear hole-to-anchor sizing simplifies drilling and reduces installation errors.
• Robust carbon-steel construction provides dependable anchor strength for structural attachments.

Cons

• Designed only for concrete; not suitable for block or brick applications.
• Galvanized finish is good for damp environments but not as corrosion-resistant as stainless in marine settings.

Specifications

Our Verdict

The CONFAST 5/8 in x 6 in Galvanized Wedge Anchor is a practical, cost-effective choice for concrete anchoring when corrosion resistance and ready-to-use hardware matter. It is recommended for tradespeople and homeowners anchoring structural elements to poured concrete who want reliable performance and easy installation; choose stainless or a different style only if your substrate or exposure demands it.

Frequently Asked Questions

Can these anchors be used in block or brick?
No. These wedge anchors are designed for poured concrete only and should not be used in block or brick base material.

What drill bit should be used?
Use a carbide-tipped bit that meets ANSI standards in a hammer drill and drill a 5/8 in hole to match the anchor diameter.

Are the included nuts and washers compatible?
Yes, each anchor is packaged with matching nuts and washers so you can install them immediately without additional hardware.