CONFAST 3/8 in x 3 in Stainless Steel Wedge Anchor - Corrosion

In this review the CONFAST 3/8 in x 3 in Stainless Steel Wedge Anchor is presented as a straightforward, heavy-duty concrete anchor aimed at contractors, HVAC installers, and DIYers who need a dependable stainless anchor for wet or submerged environments. The single biggest reason to buy is its 304 stainless steel construction, which resists rust in wet conditions and ensures long-term holding power for fixtures that remain exposed to moisture. The review focuses on practical installation details and where this anchor performs best.

Key Features

• 304 stainless steel: Provides corrosion resistance so anchors can be used in wet or submerged environments without rusting over time.
• Complete hardware: Each anchor is packaged with nuts and washers for a fast, complete installation without separate purchases.
• Simple hole sizing: The hole diameter equals the anchor size, so a 3/8 in bit produces the correct hole for a quick, uncomplicated install.
• Suitable for concrete only: Designed specifically for concrete base material to ensure predictable expansion and holding strength.
• Thread length: With 1-1/2 in of threads, there is enough engagement for common mounting applications like brackets and equipment bases.

Who It's For

The CONFAST wedge anchor is best for professionals and serious DIYers who mount equipment to concrete, such as HVAC mini splits, posts, or gazebo anchors on concrete decks, and anyone needing anchors that stand up to moisture. Its 304 stainless construction makes it a logical choice for near pools, coastal installations, or industrial wet environments.

It is not appropriate for use in brick or block base material, so those working with masonry other than concrete should look for anchors rated for hollow or block applications. Also, projects requiring alternative embedment depths or nonstandard head styles may require a different fastener.

Pros & Cons

Pros

• High corrosion resistance from 304 stainless steel, so anchors keep strength in wet conditions.
• Packaged with nuts and washers for an immediate, complete installation without extra parts.
• Straightforward installation: drill a 3/8 in hole with a carbide bit and use a hammer drill for reliable placement.
• Solid construction that customers report performs well for mounting mini splits and securing gazebos.

Cons

• Designed strictly for concrete; not suitable for brick or block applications so versatility is limited.
• Sold in prepackaged boxes of 10 which may be inconvenient if only a few anchors are needed for a one-off job.

Specifications

Brand	CONFAST
Material	304 stainless steel
Anchor diameter	3/8 in
Overall length	3 in
Thread length	1-1/2 in
Minimum embedment	1-1/2 in
Package quantity	10 per box (includes nuts and washers)

Our Verdict

The CONFAST 3/8 in x 3 in Stainless Steel Wedge Anchor is a practical, value-oriented choice for anyone fastening into concrete where corrosion resistance matters. Its all-stainless construction, included nuts and washers, and simple hole-sizing make it reliable and cost effective for wet-environment projects, though it should not be used in block or brick.

Frequently Asked Questions

Can these anchors be used in wet or submerged environments?
Yes. The anchors are made from 304 stainless steel and are designed for use in wet environments without rusting.

What hole size do I need to drill?
Drill a 3/8 in hole with a carbide tipped bit in concrete; the hole diameter is the same as the anchor size for simple installation.

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