CONFAST 7/8 in x 8 in Wedge Anchor Zinc Plated (Box of 5) - Concrete

In this review the CONFAST 7/8 in x 8 in Wedge Anchor Zinc Plated (Box of 5) is evaluated for concrete anchoring jobs where strength and straightforward installation matter most. The anchor is best for contractors, shop owners and experienced DIYers who need a heavy-duty fastener for concrete applications; the single biggest reason to buy is its combination of long thread length and zinc plating that delivers reliable hold in dry environments while including nuts and washers for quick assembly. This review focuses on real-world use, ease of installation and limitations for non-concrete bases.

Key Features

• Zinc Plated: The zinc plating helps prevent rust in dry environments, extending the fastener life where moisture exposure is limited.
• Complete Kit: Packaged with nuts and washers so each anchor is ready for fast, complete installation without hunting down hardware.
• Hole Size Matches Anchor: The 7/8 in hole diameter simplifies layout and drilling because the recommended bit size equals the anchor size.
• Long Thread Length: Four inches of thread gives flexibility for fixtures of varying thickness and secure nut engagement.
• Designed for Concrete: Built from carbon steel specifically for concrete use, the anchor provides high shear and tensile capacity when installed properly.
• Wide Size Range: The availability of larger diameters and lengths ensures the correct fastener for heavy equipment and structural fixtures.

Who It's For

This anchor is ideal for people installing heavy equipment, lifts, posts or structural fixtures into solid concrete where a dependable mechanical wedge is required. The packaging with nuts and washers makes it convenient for professionals who need a ready-to-use solution on job sites.

It is not appropriate for use in block or brick base materials; anyone anchoring into hollow masonry, soft substrates or exterior wet environments should look for anchors rated for those conditions or stainless options designed for corrosion resistance in damp areas.

Pros & Cons

Pros

• Well-made carbon steel construction that customers report as strong and secure for heavy loads.
• Comes with nuts and washers for complete, fast assembly without extra parts.
• Simple installation procedure because the hole diameter equals the anchor size, reducing drilling guesswork.
• Zinc plating provides added rust resistance for indoor dry environments where longevity matters.

Cons

• Designed for concrete only, so it should never be used in block or brick - a limitation for varied masonry jobs.
• Some users report the wedge sometimes does not grip perfectly, which can require attention during installation to ensure full expansion.

Specifications

Anchor diameter	7/8 in
Anchor length	8 in
Thread length	4 in
Minimum embedment	3-7/8 in
Hole diameter/bit	7/8 in carbide tipped bit
Material and finish	Carbon steel, zinc plated
Included hardware	Nuts and washers (packaged)

Our Verdict

The CONFAST 7/8 in x 8 in Wedge Anchor is a solid choice for concrete anchoring where a durable, ready-to-install fastener is needed. It offers good value with included nuts and washers, long threads for thick fixtures, and zinc plating for dry environments; professionals and serious DIYers installing into solid concrete will appreciate its strength and convenience.

Frequently Asked Questions

Can these anchors be used in block or brick?
No. These wedge anchors are designed for concrete only and should never be used in block or brick base material.

What drill bit should be used?
Drill a 7/8 in hole with a carbide tipped bit that meets ANSI standards, using a hammer drill for best results.

Are nuts and washers included?
Yes, each anchor is packaged with the necessary nuts and washers for fast, complete installation.