CONFAST 5/8 in x 8-1/2 in Stainless Steel Wedge Anchor - Durable Wet

In this review the CONFAST 5/8 in x 8-1/2 in Stainless Steel Wedge Anchor is evaluated for contractors and DIYers who need a heavy-duty concrete anchor that resists corrosion. The bottom line: this anchor is best for applications where exposure to moisture or occasional submersion is expected, because it is made from 304 stainless steel and ships with nuts and washers for a complete installation. It is a straightforward choice if you need reliable holding power in concrete without worrying about rust over time.

Key Features

• Material: 304 stainless steel construction provides corrosion resistance suitable for wet or submerged environments.
• Complete kit: Each anchor is packaged with matching nuts and washers so installations are quick and do not require separate hardware purchases.
• Hole sizing: The hole diameter equals the anchor diameter which simplifies drilling and reduces installation guesswork.
• Thread length: Four inches of thread length allow for above-surface adjustments and secure fastening to fixtures.
• Embedment depth: A minimum embedment of 2-3/4 in ensures proper anchoring performance when installed to specification.
• Length and diameter: The 8-1/2 in length and 5/8 in diameter cater to medium-duty concrete anchoring tasks.

Who It's For

The CONFAST wedge anchor suits contractors, HVAC installers, and homeowners mounting equipment like mini splits, handrails, or gazebo legs to concrete decks where moisture exposure is a concern. Its stainless construction and included hardware make it a convenient choice for job sites that need durable, corrosion-resistant fasteners.

Those who work primarily with block, brick, or hollow base materials should look elsewhere, since this anchor is designed strictly for concrete. If you need specialized high-load chemical anchors or adhesive systems for unusual substrates, consider alternative anchoring solutions.

Pros & Cons

Pros

• Excellent corrosion resistance from 304 stainless steel for use in wet or submerged environments.
• Includes nuts and washers, speeding installation and ensuring compatibility.
• Clear installation sizing where hole diameter equals anchor diameter simplifies drilling.
• Sturdy build and good value noted by multiple customers for common anchoring tasks.

Cons

• Intended for concrete only and should not be used in block or brick, limiting substrate options.
• Some users have reported missing parts on occasion, so check contents before installation.

Specifications

Brand	CONFAST
Material	304 stainless steel
Diameter	5/8 in
Length	8-1/2 in
Thread length	4 in
Minimum embedment	2-3/4 in
Includes	Nuts and washers (5 per box)

Our Verdict

The CONFAST 5/8 in x 8-1/2 in stainless steel wedge anchor is a practical, corrosion-resistant option for concrete fastening in wet environments. Installers who need a ready-to-use anchor with included nuts and washers will find it reliable and cost-effective, provided the application is concrete and the box contents are checked before use.

Frequently Asked Questions

Can this anchor be used in wet or submerged locations?
Yes. The anchor is made from 304 stainless steel and is designed for wet environments, including intermittent submersion.

What size hole do I need to drill?
Drill a 5/8 in hole in concrete using a carbide tipped bit in a hammer drill; hole diameter equals anchor size for simple installation.

Is this anchor suitable for block or brick?
No. This wedge anchor is designed for concrete only and should not be used in block or brick base materials.