CONFAST 3/8 in x 3-1/2 in Wedge Anchor Zinc Plated - Solid Concrete

In this review the CONFAST 3/8 in x 3-1/2 in Wedge Anchor is evaluated for contractors, DIYers, and anyone fastening into concrete who needs a straightforward, reliable anchor. The bottom line: its zinc plating and included nuts and washers make installation fast and keep hardware protected in dry environments, while the simplicity of "hole size is anchor size" removes guesswork. Reviewers found the anchors to offer good value and durable fit for common concrete tasks, though some users reported mixed grip performance depending on concrete condition.

Key Features

• Zinc plated finish: Helps resist surface rust in dry, indoor or covered conditions so hardware maintains appearance and function over time.
• Packaged complete: Each box includes nuts and washers, allowing a quick, complete installation without sourcing additional hardware.
• Hole size equals anchor size: Simplifies layout and drilling by using the anchor diameter as the drill bit size for fewer mistakes.
• Wide range of sizes: Enables selection of the correct fastener length and diameter for different concrete thicknesses and load needs.
• Box quantity: Pack of 50 provides good value for larger projects, reducing trips to the supply store.

Who It's For

This wedge anchor is best for tradespeople, contractors, and homeowners who need a simple, conventional anchor for anchoring fixtures, shelving, or light structural connections to concrete. The included nuts and washers make it practical for jobs where speed and a complete kit matter.

Those who require superior corrosion resistance for outdoor, marine, or highly humid locations should look for stainless steel anchors instead. Also, projects demanding maximum pullout strength in poor or cracked concrete may need specialty anchors designed for those substrates.

Pros & Cons

Pros

• Good overall value for a box of 50 when compared to higher-priced alternatives.
• Easy to install thanks to the anchor-size hole guidance and included nuts and washers.
• Zinc plating helps prevent surface rust in dry environments, preserving parts in common indoor uses.
• Consistent manufacturing quality reported by multiple users who noted the anchors "work well" and feel solid.

Cons

• Some customers reported mixed anchor hold in certain concrete conditions, so performance can vary by substrate quality.
• Zinc plating is not suitable for prolonged outdoor or coastal exposure where stainless steel would be preferable.

Specifications

Our Verdict

The CONFAST 3/8 in x 3-1/2 in Wedge Anchor is a sensible, cost-effective choice for standard concrete fastening where a zinc finish and complete hardware kit are sufficient. It is recommended for professionals and DIYers doing interior or protected work who want reliable, easy installation and good value; choose stainless or specialty anchors if you need extra corrosion resistance or assured grip in poor concrete.

Frequently Asked Questions

Are nuts and washers included?
Yes, each box is packaged with nuts and washers so installations can proceed without purchasing additional parts.

Is the zinc plating suitable for outdoor use?
Zinc plating helps in dry, covered conditions but is not recommended for prolonged outdoor or coastal exposure; stainless steel is better for those environments.

What drill bit size is required?
Use a drill bit equal to the anchor diameter because the product follows the "hole size is anchor size" rule for straightforward installation.