The best 3/4-inch concrete anchor depends on the embedment length, base material, and installation requirements. For a certified option in uncracked concrete, consider Red Head TruBolt; for zinc-plated wedge anchors in several lengths and pack sizes, compare SURGE BUILDING PRODUCTS. CONFAST offers a 20-pack with nuts and washers, while HROMIGRY is a straightforward 10-pack for solid concrete.
| Product | Length | Pack | Best For |
|---|---|---|---|
| SURGE BUILDING PRODUCTS Zinc-Plated Wedge Anchor | 5-1/2 in. | 20 | Everyday concrete and fully grouted CMU use |
| Red Head TruBolt | 5-1/2 in. | 10 | Specified structural applications in uncracked concrete |
| SURGE BUILDING PRODUCTS Long Wedge Anchor | 8-1/2 in. | 10 | Projects needing a longer anchor |
| CONFAST Zinc-Plated Wedge Anchor | 5-1/2 in. | 20 | Concrete-only jobs with included hardware |
| HROMIGRY Zinc-Plated Wedge Anchor | 5-1/2 in. | 10 | Solid-concrete fastening in a smaller pack |
SURGE 3/4-Inch By 5-1/2-Inch Wedge Anchors
This 20-pack of carbon-steel wedge anchors is designed for concrete, cement, and fully grouted cinder block. Its zinc plating is intended to help resist corrosion in dry indoor environments. The listed drill-bit guidance is simple: the bit diameter matches the anchor diameter.
Best for: Buyers who need a common 5-1/2-inch length, a larger pack, and the option to anchor into fully grouted CMU as well as concrete. Choose this if the installation is indoors and the base material matches the product guidance.
Limitation: The zinc finish is specified for dry indoor use; it is not presented as a choice for wet or highly corrosive environments.
Red Head TruBolt 3/4-Inch Wedge Anchors
Red Head lists these 3/4-by-5-1/2-inch anchors as ICC-ES approved under ESR-2251 for use in uncracked concrete. The product description identifies structural supports, machinery, and sill plate installations as intended applications, and describes installation as straightforward. The package contains 10 anchors.
Best for: Buyers whose project specifications call for the stated evaluation report and use in uncracked concrete. It is the clearest fit in this selection when documented approval is a priority.
Limitation: The stated approval is for uncracked concrete. Do not assume it covers cracked concrete or other base materials; check project requirements and the applicable installation documentation.
SURGE 3/4-Inch By 8-1/2-Inch Wedge Anchors
This longer SURGE option uses carbon steel with zinc plating and comes in a 10-pack. The product information describes use in concrete, cement, and fully grouted CMU, with the coating intended to help resist corrosion in dry indoor settings. It also states that the drill-bit diameter matches the anchor diameter.
Best for: Installations where the specified anchor length is 8-1/2 inches rather than 5-1/2 inches. Compare the required embedment, fixture thickness, and substrate conditions before choosing a longer fastener.
Limitation: A longer anchor is not automatically the right choice for every mounting job. The product description does not provide project-specific load capacity, so follow the design and installation requirements for the application.
CONFAST 3/4-Inch By 5-1/2-Inch Wedge Anchors
CONFAST supplies a 20-pack of zinc-plated wedge anchors for dry environments. The product details specify concrete-only use and say each anchor includes the nut and washer required for installation. For drilling, use an ANSI imperial bit with the same diameter as the anchor.
Best for: Buyers fastening into concrete who want the installation hardware included and a 20-piece quantity. It is a practical comparison against the SURGE 5-1/2-inch option when the base material is concrete only.
Limitation: The listing specifically excludes brick, block, and grout. Choose another product if the installation is in those materials.
HROMIGRY 3/4-Inch By 5-1/2-Inch Anchors
HROMIGRY’s 10-pack is made from zinc-plated carbon steel and measures 3/4 inch in diameter by 5-1/2 inches long. The product description identifies solid concrete and cement as suitable base materials for mounting and structural anchorage. It explicitly says not to use these anchors in block or brick.
Best for: Buyers who need a 10-pack of the common 5-1/2-inch length for solid concrete. Its clearly stated material restriction can help narrow selection when the substrate is known.
Limitation: Do not select this anchor for brick or block installations, according to the listed product guidance.
Buying Guide: Choosing 3/4-Inch Concrete Anchors
Which length should you choose?
Start with the required embedment and the thickness of the material being fastened. Anchor length alone does not establish suitability: the fixture, washers, and other parts of the assembly affect how much anchor can enter the concrete. Compare the job requirements with the product dimensions and installation instructions before buying.
Does the base material matter?
Yes. Product guidance differs: some listed anchors specify concrete only, some also identify fully grouted CMU, and HROMIGRY excludes block and brick. Do not treat concrete, hollow block, grouted block, and brick as interchangeable. Confirm the exact base material and select an anchor whose instructions cover it.
What should you know about finish and environment?
Zinc plating is described on several products as suitable for dry indoor environments or everyday use. That wording is not a claim of suitability for outdoor exposure, persistent moisture, or corrosive conditions. If the installation environment is demanding, check the manufacturer’s complete specifications for an appropriate material and finish.
When does certification matter?
For code-sensitive or structural work, review the project documents and applicable building requirements. Red Head lists ESR-2251 approval for uncracked concrete, but that statement should not be extended to other substrates or conditions. Confirm that the approval and installation method match the project.
How do you compare pack sizes and drilling?
Pack counts range from 10 to 20 in these selections. Estimate the number of fasteners needed, including any spares, and check whether nuts and washers are included. Several listings specify a drill bit matching the 3/4-inch anchor diameter; follow the product’s full installation instructions for hole depth, cleaning, and setting.
Frequently Asked Questions
What drill-bit diameter is listed for a 3/4-inch wedge anchor?
Several product descriptions specify a bit with the same diameter as the anchor. Check the chosen product’s installation instructions and use the specified bit type.
Can these anchors be used in brick?
Not all can. CONFAST and HROMIGRY specify concrete-only use or exclude brick, while other listings identify concrete and, in some cases, fully grouted CMU. Verify the exact product guidance before installation.
Are zinc-plated anchors suitable for outdoor use?
The listed descriptions emphasize dry indoor environments for zinc-plated options. They do not establish suitability for all outdoor or wet conditions.
Which option has a stated evaluation report?
Red Head TruBolt lists ICC-ES approval under ESR-2251 for use in uncracked concrete. Confirm the report and project requirements before relying on it.