CONFAST 5/8 in x 4-1/2 in Wedge Anchor Zinc Plated - Concrete

In this review the CONFAST 5/8 in x 4-1/2 in Wedge Anchor Zinc Plated (box of 25) is evaluated for contractors and serious DIYers who need reliable concrete anchoring. The bottom line: it is a straightforward, well made anchor for dry concrete applications that ships complete with nuts and washers for fast installation. The review highlights durability, hole and embedment simplicity, and real-world use cases where these anchors deliver secure fastening without extra parts or complicated installation steps.

Key Features

• Zinc plated finish: Helps resist surface corrosion in dry environments so anchors maintain integrity when used in garages, shops, and indoor installations.
• Complete kit packaging: Each anchor comes packaged with nuts and washers for a fast, complete installation without hunting for additional hardware.
• Hole size equals anchor size: The 5/8 in hole requirement simplifies layout and drilling, reducing confusion at the jobsite.
• Designed for concrete: Made from carbon steel and intended specifically for concrete, these anchors avoid the guesswork of improper base material use.
• Generous thread length: With 2-3/4 in of thread, the anchor allows for adjustment and secure clamping of a variety of fixtures.

Who It's For

The CONFAST wedge anchor is aimed at tradespeople and experienced DIYers who frequently fasten heavy equipment, posts, or structural elements to cast concrete and need a durable, no-frills anchor that includes nuts and washers. It is particularly useful for projects like 2-post and 4-post lifts, equipment bases, and heavy-duty shelving.

Those who should look elsewhere include people working with brick, block, or hollow base materials, or users needing corrosion resistance for wet or marine environments; this anchor is specified for dry concrete only and is not rated for other substrates or continuous moisture exposure.

Pros & Cons

Pros

• Well packaged with nuts and washers for immediate installation and minimal downtime.
• Strong carbon steel construction with zinc plating suitable for dry interior applications.
• Simple installation logic since the hole diameter matches the anchor size, reducing errors.

Cons

• Not suitable for block, brick, or wet environments; limited to dry concrete use.
• A small number of users report wedge engagement issues requiring careful installation technique.

Specifications

Our Verdict

The CONFAST 5/8 in x 4-1/2 in wedge anchor is a sensible, value-oriented choice for anyone attaching heavy items to dry concrete. Its included nuts and washers and simple hole-size rule save time on installation, and the zinc plated finish is appropriate for indoor projects. Buy these if you need dependable concrete anchors for structural or equipment work and want a ready-to-use boxed supply.

Frequently Asked Questions

Can these anchors be used in brick or block?
No. They are designed for use in concrete only and should not be used in brick or block base materials.

What drill bit should be used?
Use a 5/8 in carbide tipped bit in a hammer drill, meeting ANSI standards, to achieve the correct hole diameter.

Are they corrosion resistant for outdoor use?
The zinc plated finish helps in dry environments but these anchors are intended for dry indoor use and are not specified for continuous wet or marine exposure.