Сравнение популярных брендов распорных анкеров в 2026 году

Selecting the correct anchor is crucial for structural integrity. The top brands in 2026 offer excellent анкерные болты for various needs. This analysis of expansion bolt brands highlights key performance metrics. A производитель крепежных изделий на заказ может предоставить специальные анкерные болты for unique projects.

2026 Leaders at a Glance:

• Hilti Kwik Bolt TZ2: The premier anchor for best overall performance.
• Simpson Strong-Tie Strong-Bolt 2: This anchor is best for versatility.
• DeWalt Power-Stud+ SD1: The leading anchor for best value and availability.
• Red Head Trubolt+: A reliable anchor among standard Анкерные болты.

A Closer Look at Top Expansion Bolt Brands

Contractors and engineers must look beyond marketing claims to select the right components. A detailed review of the leading expansion bolt brands reveals distinct strengths in performance, approvals, and value. Each brand targets specific project needs with specialized products.

Hilti: The Performance Benchmark

Hilti solidifies its position as the industry leader in anchor technology. The brand is synonymous with cutting-edge engineering, rigorous testing, and ultimate performance. Professionals choose Hilti for critical applications where failure is not an option. The Kwik Bolt TZ2 anchor represents the pinnacle of this engineering philosophy.

Kwik Bolt TZ2 Performance Data

The Hilti Kwik Bolt TZ2 provides ultimate-performance wedge anchor capabilities. It is specifically engineered for cracked concrete and seismic applications. The performance data confirms its suitability for the most demanding jobs, with seismic testing completed according to ACI 355.2 and ICC-ES AC 193. This anchor delivers superior tension and shear performance in challenging conditions.

Material and Coating Options

Hilti offers the Kwik Bolt TZ2 with materials and approvals suited for controlled indoor environments. The robust construction ensures reliability and strength.

Unique Features and Innovations

Hilti’s innovation extends beyond the anchor itself to a complete system. The brand provides integrated solutions like PROFIS Engineering software. This software helps engineers design complex anchor patterns. Hilti also specifies compatible installation tools, such as the TE 6-22 rotary hammer, to ensure correct installation and optimal performance. The Kwik Bolt TZ2 is available in an extensive range of diameters and lengths, offering unmatched design flexibility.

Available Sizes:

• Diameters: 1/4 in to 1 in
• Lengths: 2-1/8 in to 12 in

This wide selection allows for precise specification, making it one of the most versatile high-performance bolts on the market.

Ideal Project Applications

The exceptional strength and seismic ratings of the Kwik Bolt TZ2 make it the ideal anchor for:

• Critical structural steel connections
• Stadiums and high-rise buildings
• Nuclear facilities and power plants
• Safety-relevant attachments in cracked concrete zones

Simpson Strong-Tie: The Versatile Contender

Simpson Strong-Tie has built a formidable reputation on versatility and comprehensive code compliance. The brand is a favorite among engineers and inspectors who require fasteners with extensive, easily verifiable approvals. The Strong-Bolt 2 wedge anchor is a testament to this commitment.

Strong-Bolt 2 Performance Data

The Strong-Bolt 2 delivers reliable and consistent performance across a variety of applications. Its design is optimized for strength in both cracked and uncracked concrete. While it competes well on strength, its primary advantage lies in its broad acceptance by building authorities.

Extensive Code Approvals

Code compliance is where the Strong-Bolt 2 truly shines. This anchor is a trusted solution for projects with stringent oversight.

Ключевые одобрения: The anchor holds an ICC-ES ESR-3037 report. This document verifies its testing in accordance with ACI 355.2 и ICC-ES AC193 for use in cracked concrete and seismic conditions. Engineers can specify this anchor with high confidence in its approval status.

Anchor Tiedown System (ATS) Integration

Simpson Strong-Tie offers a complete ecosystem of structural products. The Strong-Bolt 2 anchor integrates seamlessly with the company’s Anchor Tiedown Systems (ATS) for wood-frame construction. This system approach simplifies design and ensures compatibility between connectors, holdowns, and anchors.

Ideal Project Applications

The Strong-Bolt 2 is an excellent choice for projects where code compliance is paramount. Ideal applications include:

• Commercial and residential construction
• Seismic retrofitting projects
• Attaching ledgers and sill plates
• Any application requiring pre-approved, code-listed fasteners

DeWalt (Powers): The Value Leader

DeWalt, incorporating the legacy of Powers Fasteners, emerges as the value leader in the fastener market. The brand excels at providing reliable, code-approved expansion bolts at a competitive price point. The Power-Stud+ SD1 is the flagship product that embodies this balance of cost and quality.

Power-Stud+ SD1 Performance Data

The Power-Stud+ SD1 offers excellent performance data for its price category. This fully-threaded wedge anchor is approved for use in uncracked concrete and provides dependable holding values for a majority of common construction tasks. Its performance makes it a go-to workhorse for countless jobsites.

Cost-to-Performance Ratio

The key advantage of the Power-Stud+ SD1 is its outstanding cost-to-performance ratio. It provides contractors with a certified and reliable anchor without the premium cost associated with top-tier specialty brands. For large projects with high-volume fastening needs, the cost savings become significant.

Availability and System Compatibility

DeWalt leverages its vast distribution network, making the Power-Stud+ SD1 one of the most accessible anchors available. Contractors can find it at major home improvement centers and construction supply houses. Furthermore, it is part of the larger DeWalt ecosystem, ensuring compatibility with DeWalt’s extensive line of rotary hammers and impact wrenches.

Ideal Project Applications

The Power-Stud+ SD1 is the perfect anchor for cost-sensitive projects that still require certified reliability. Its ideal uses include:

• General purpose fastening in concrete
• High-volume MEP (Mechanical, Electrical, Plumbing) installations
• Fastening strut, conduit racks, and pipe supports
• Budget-conscious commercial and residential projects

Red Head: The Established Workhorse

Red Head holds a legacy position among expansion bolt brands. It is known for producing dependable, straightforward fasteners. The brand’s Trubolt+ wedge anchor is a fixture on jobsites across the country. It represents a reliable standard for many common applications, making it a true industry workhorse for general purpose expansion bolts.

Trubolt+ Performance Data

The Trubolt+ anchor provides solid, predictable performance for standard-duty applications. The performance data for this anchor confirms its suitability for uncracked concrete. It holds an ICC-ES ESR-22Trubolt+ anchor provides solid, predictable performance for standard-duty applications. The performance data for this anchor confirms its suitability for uncracked concrete. It holds an ICC-ES ESR-2232 report for uncracked concrete, giving engineers and contractors a baseline of certified holding values. While it does not match the ultimate loads of premium seismic anchors, its performance is more than adequate for a vast range of fastening tasks.

Industry Reputation and Reliability

Red Head built its reputation on decades of consistent quality. Contractors trust the Trubolt+ anchor because it is a known quantity. Its installation is simple, and its performance is predictable in the conditions for which it was designed. This long-standing reliability makes it a default choice for many experienced professionals who need a standard anchor they can depend on without extensive re-evaluation for every job.

A Trusted Standard: For many general contractors, the Trubolt+ is the go-to anchor for everyday concrete fastening. Its familiarity and consistent performance minimize guesswork on the jobsite.

Common Applications and Limitations

The Trubolt+ anchor has become an industry standard in numerous construction applications due to its reliability and ease of use. Its versatility in standard conditions makes this anchor a staple for securing a wide variety of fixtures and components. Common uses include:

• Structural steel columns and beams
• Railings and fencing
• Warehouse racking and conveyor systems
• Seismic bracing and hold downs
• Overhead ductwork, pipes, and cable trays
• Anchoring of equipment and machinery

However, it is critical to recognize the limitations of this anchor. The standard Trubolt+ anchor is primarily intended for use in uncracked concrete. It is generally not suitable for applications in cracked concrete zones or areas with high seismic design requirements, where a specialized anchor is necessary.

Ideal Project Applications

The Trubolt+ anchor excels in projects where a reliable, code-compliant fastener is needed for non-critical applications in uncracked concrete. Its ideal uses are:

• General structural and non-structural connections
• High-volume fastening of building services
• Projects where cost-effectiveness is important but certification is still required
• Standard commercial and industrial construction

Head-to-Head Performance Comparison of Top Brands

A true vendor comparison moves beyond brand reputation and into the hard numbers. This section analyzes the performance data of the top expansion bolts to provide a clear picture of their capabilities. We will compare vendors based on critical performance metrics: ultimate tensile (pull-out) strength and ultimate shear (side-load) strength. The load capacity of an anchor is the ultimate measure of its engineering.

Ultimate Tensile Strength

Ultimate tensile strength measures the maximum pulling force an anchor can withstand before it fails. This is a critical metric for overhead applications or connections under direct tension. The performance data below is based on installation in 4,000 PSI uncracked concrete at standard embedment depth.

3/8″ Diameter Anchor Comparison

For smaller diameter applications, the performance differences are noticeable.

• Hilti Kwik Bolt TZ2: Leads with the highest load capacity, demonstrating superior grip.
• Simpson Strong-Bolt 2: Offers robust performance, closely trailing the leader.
• DeWalt Power-Stud+ SD1: Provides reliable strength, representing excellent value.
• Red Head Trubolt+: Delivers dependable performance for standard-duty tasks.

1/2″ Diameter Anchor Comparison

The 1/2″ diameter is one of the most common sizes for structural applications. In this category, the engineering of each anchor becomes even more apparent. Hilti continues to set the benchmark, but Simpson provides a highly competitive alternative. DeWalt’s anchor remains a strong contender, especially when project budget is a primary driver.

5/8″ Diameter Anchor Comparison

For heavy-duty connections, the 5/8″ anchor class shows significant separation in performance. The advanced expansion mechanism of the Hilti Kwik Bolt TZ2 allows it to achieve a higher load capacity. The Simpson Strong-Bolt 2 also provides exceptional strength, suitable for demanding structural jobs.

Analysis of Tensile Load Data

The analysis consistently shows a performance hierarchy. Hilti’s Kwik Bolt TZ2 establishes itself as the top performer across all diameters, justifying its premium position. Simpson’s Strong-Bolt 2 is a very close second, offering impressive strength combined with extensive approvals. The DeWalt Power-Stud+ SD1 provides the best balance of cost and performance, making it a smart choice for high-volume work. The Red Head Trubolt+ anchor offers predictable, certified strength for general-purpose applications where ultimate loads are not the primary design concern.

Ultimate Shear Strength

Ultimate shear strength measures the maximum side-load force an anchor can resist. This is vital for applications like seismic bracing, ledger boards, and base plates subject to lateral forces. The material of the anchor itself plays a significant role in its shear performance.

3/8″ Diameter Anchor Comparison

In shear tests, the steel composition of the anchor is a primary factor. All brands provide solid shear values, ensuring stability against lateral forces for smaller connections.

1/2″ Diameter Anchor Comparison

At the 1/2″ diameter, the differences in steel quality and bolt diameter precision become more evident. The premium brands generally exhibit higher shear capacities due to superior metallurgy and manufacturing tolerances.

5/8″ Diameter Anchor Comparison

For heavy shear loads, material choice is critical. While carbon steel is the standard, some applications demand the strength and corrosion resistance of stainless steel. The material properties of stainless steel can yield a higher shear capacity.

Material Impact on Shear Performance The shear strengths for carbon steel and stainless steel versions of an anchor differ because the materials possess distinct properties. For example, test values show a significant increase in shear strength when moving from a carbon steel anchor to a stainless steel version.

Anchor Example	Материал	Shear Strength (Vsa)
Hilti HIT-Z	Углеродистая сталь	5,886 lbs
Hilti HIT-Z-R	Нержавеющая сталь	8,026 lbs

Analysis of Shear Load Data

The shear load data reinforces the importance of the anchor’s material composition. While the brand hierarchy seen in tensile tests largely holds, engineers must also consider the specific steel type for the application. A stainless steel anchor from any leading brand will typically offer superior shear performance and corrosion resistance compared to its zinc-plated carbon steel counterpart, albeit at a higher cost.

Performance in Different Base Materials

An anchor is only as strong as the concrete it is installed in. The strength of the base material, measured in pounds per square inch (PSI), directly impacts the anchor’s achievable load capacity.

Load Values in 2,500 PSI Concrete

In lower-strength 2,500 PSI concrete, all anchors will have a reduced load capacity compared to their ratings in stronger concrete. The weaker base material becomes the limiting factor. In these situations, a higher-performance anchor may not provide a significant advantage over a standard anchor, as the concrete itself is more likely to fail first.

Load Values in 4,000 PSI Concrete

Standard commercial projects often specify 4,000 PSI concrete. In this stronger base material, the design and engineering of the anchor play a much larger role. A high-performance anchor like the Hilti Kwik Bolt TZ2 can engage the concrete more effectively, leading to a significantly higher load capacity compared to a standard anchor.

Performance in Lightweight Concrete

Lightweight and cracked concrete present the most challenging conditions for any anchor. The presence of cracks in concrete disrupts the even distribution of stress, which can severely reduce the failure loads.

Important Note on Concrete Condition: An anchor’s performance is highly dependent on the state of the concrete. For this reason, engineers should always design for cracked concrete conditions unless a specific analysis proves the concrete will remain uncracked for the life of the structure. The chosen anchor must have the proper approvals (e.g., an ICC-ES Report) for use in cracked concrete to ensure safety and code compliance.

Deep Dive into Wedge Anchor Bolts for Heavy-Duty Jobs

For heavy-duty structural applications, wedge anchor bolts are the industry’s fastener of choice. Their design provides superior strength and reliability in solid concrete, making them essential for securing everything from steel columns to heavy machinery. Understanding why they dominate and how top expansion bolts companies approach their design is key to proper specification.

Why Wedge Anchors Dominate Structural Use

The exceptional performance of wedge anchor bolts comes from a simple yet powerful mechanical principle. This mechanism ensures a secure connection capable of handling immense loads.

Unmatched Strength Mechanism

The strength of a wedge anchor originates from its unique expansion process. This process creates a powerful grip inside the concrete.

• Expansion Mechanism: Tightening the nut pulls a tapered cone on the anchor body into an expansion clip. This action forces the clip to expand outward.
• Frictional Forces: The expanding clip presses firmly against the walls of the drilled hole. This generates immense friction, which is the primary source of the anchor’s holding power.
• Mechanical Interlock: The clip also directly engages with the surface of the concrete, creating a mechanical interlock that further secures the anchor.

The final load capacity of any anchor depends on its diameter, its embedment depth, and the compressive strength of the concrete itself.

Reliability in Solid Concrete

Engineers trust wedge anchor bolts because of their proven track record in demanding environments. Case studies demonstrate their reliability. For example, these fasteners secure large hydraulic presses in steel plants and anchor large automated assembly lines in automotive facilities. In these applications, the anchor provides stability against extreme pressure and heavy loads. A report from the Portland Cement Association also notes that in seismic zones, using a wedge anchor can reduce failure rates significantly compared to other fastener types, highlighting their robust performance.

Comparing Top Expansion Bolts Companies for Wedge Anchors

Leading expansion bolt brands offer specialized wedge anchor bolts for heavy-duty work. Each brand has a distinct focus, from ultimate performance to code compliance.

Hilti’s Heavy-Duty Offerings

Hilti offers ultimate-performance wedge anchor bolts for the most critical jobs. Products like the HSL4 heavy-duty wedge anchor are designed for safety-relevant and dynamic applications. This anchor has approvals for use in nuclear power plants, for securing heavy equipment, and for resisting seismic and shock loads. These high-performance bolts represent the peak of anchor engineering for challenging concrete conditions.

Simpson’s Code-Compliant Options

Simpson Strong-Tie excels in providing wedge anchor bolts with extensive, verifiable code approvals. Their Strong-Bolt 2 anchor is a trusted solution for projects under strict regulatory oversight.

Approvals at a Glance The Strong-Bolt 2 holds an active ICC-ES report for use in both cracked concrete and seismic zones. This makes it a go-to anchor for engineers who need to meet stringent building codes with confidence.

DeWalt’s Value-Engineered Solutions

DeWalt provides value-engineered wedge anchor bolts that balance reliable performance with cost-effectiveness. While their standard expansion bolts are perfect for many general-purpose jobs in uncracked concrete, they may not carry the specialized seismic or cracked concrete approvals found with premium brands. This makes them an excellent choice for high-volume projects where ultimate load performance is not the primary design driver.

How to Choose the Right Expansion Bolts

Selecting the correct expansion bolts involves more than just picking a brand. Professionals must align the anchor’s capabilities with specific project demands, technical factors, and code requirements. This ensures secure anchoring and long-term structural safety.

Matching Anchor to Your Project

Different jobs have unique load requirements and environmental conditions. Matching the anchor to the application is the first step toward a successful installation.

For High-Load Structural Connections

Structural connections for steel beams and columns demand the highest performance from an anchor. These applications involve immense forces.

• A single M20 high-strength bolt can carry approximately 100 kN.
• A stiffened steel section can sustain loads greater than 250 kN.
• Column splices often handle axial loads exceeding 2000 kN.

For these jobs, a premium anchor like the Hilti Kwik Bolt TZ2 or Simpson Strong-Bolt 2 is necessary to manage the high load requirements.

For General Purpose Fastening

Many projects involve fastening non-structural items like conduit, cable trays, or lightweight equipment. For these tasks, a standard, reliable anchor like the Red Head Trubolt+ provides sufficient performance and offers a dependable installation.

For Cost-Sensitive, High-Volume Jobs

Large-scale projects with thousands of fastening points require reliable fastening solutions that are also economical. The DeWalt Power-Stud+ SD1 offers an excellent balance of certified performance and cost-effectiveness, making it ideal for high-volume installation work.

For Seismic or Cracked Concrete Zones

Modern engineering recognizes that concrete can crack under load. Any installation in a seismic zone or a cracked concrete area requires a specially designed anchor. These anchors, which have specific key approvals and certifications, are engineered to maintain their load capacity even in compromised concrete.

Key Technical Factors to Consider

Beyond the application, technical specifications dictate the correct anchor selection and installation best practices.

Calculating Required Embedment Depth

The embedment depth of an anchor is critical to its load capacity. Engineers calculate this depth based on the load requirements and the concrete strength. ACI-318 Appendix D provides the industry standard for these calculations, which often involves analyzing the area of a 45-degree shear cone extending from the anchor in the concrete.

Safe Working Load vs. Ultimate Load

Manufacturers test an anchor to failure to find its ultimate load. However, for safety, engineers use a much lower safe working load.

To determine the safe working load, engineers apply a safety factor to the ultimate load. ACI 318 specifies strength reduction (phi) factors from 0.45 to 0.75 for concrete. General rigging often uses a 4:1 or 5:1 safety factor. This ensures the anchor is never stressed near its failure point. The safe working load is the most important number for any installation.

Spacing and Edge Distance Rules

Every anchor needs a certain amount of concrete around it to achieve its full load capacity. Placing an anchor too close to another anchor or to the edge of the concrete can cause a blowout. Manufacturers provide strict guidelines for minimum spacing and edge distances for every anchor.

Material Selection: Zinc vs. Stainless Steel

The project environment determines the correct anchor material. Zinc-plated carbon steel anchors are suitable for dry, indoor conditions. For outdoor, wet, or corrosive environments, a stainless steel anchor is essential to prevent rust and ensure long-term performance.

Understanding Certifications and Approvals

Official certifications provide third-party verification of an anchor’s performance claims.

ICC-ES Reports Explained

An ICC-ES report is one of the most important key approvals and certifications for an anchor. It proves the product meets building code requirements and that its performance data has been independently verified.

Cracked Concrete Approval

An anchor with cracked concrete approval has been tested to perform reliably in concrete with existing cracks. This is a critical safety feature and a code requirement for many modern building projects. Matching anchor to concrete strength and condition is vital.

Seismic Design Categories

Regions with earthquake risk have specific seismic design requirements. An anchor used in these areas must have key approvals and certifications showing it has passed rigorous seismic testing.

When You Need Special Approvals

Critical applications, such as in hospitals, power plants, or high-rise buildings, often require special approvals beyond standard certifications. Always verify the project specifications to ensure the chosen anchor has the necessary qualifications.

Cost vs. Performance Analysis

A professional evaluation of expansion bolts must extend beyond technical data to include a thorough cost analysis. The initial price of an anchor is only one part of the equation. True value emerges when balancing upfront cost with installation efficiency, long-term performance, and risk mitigation. This price per anchor comparison reveals how brand positioning impacts project budgets.

Price Per Anchor Comparison

The sticker price of an anchor often reflects its engineering, material quality, and the extent of its certifications. A direct cost comparison highlights these differences clearly.

Cost of Standard 1/2″ x 5″ Anchors

The 1/2″ x 5″ zinc-plated клинового анкера is a common size, making it a useful benchmark for cost. The price per anchor can vary significantly between brands.

Примечание: Prices are estimates for single units and can change based on supplier and region.

Premium vs. Economy Brand Pricing

Premium brands like Hilti and Simpson justify their higher cost with superior performance in demanding conditions, such as cracked concrete and seismic zones. This cost also covers extensive research and development. Economy brands like DeWalt and Red Head offer a lower cost per anchor, providing excellent value for standard applications in uncracked concrete.

Bulk Purchase Cost Savings

Contractors can significantly reduce the unit cost of any anchor through bulk purchasing. For large-scale projects, a 10-20% reduction in cost per anchor is common when buying by the case or pallet. This makes the overall cost more manageable.

Calculating Long-Term Value

The cheapest anchor is rarely the most economical choice over the project’s lifespan. Calculating long-term value and reliability involves looking at the total cost of ownership.

The Cost of Anchor Failure

An anchor failure creates costs that far exceed the price of the anchor itself. These expenses include structural repairs, equipment damage, project delays, and potential legal liability. The small additional cost for a higher-performance anchor is a wise investment against these catastrophic financial risks.

Labor Savings with Better Anchors

A well-designed anchor can reduce labor cost by streamlining installation. Some modern anchor systems offer features that boost efficiency on the jobsite.

• They can eliminate the need for separate steps like cleaning the hole extensively.
• An optimized design allows for faster setting with standard tools.
• This reduces the overall time spent on drilling and fastening for each anchor.

This efficiency translates directly into lower labor cost, which can offset the higher initial price of the anchor.

Investment in Certified Reliability

Ultimately, the higher cost of a premium anchor is an investment in certified performance. Paying more for an anchor with extensive ICC-ES reports and specialized approvals provides documented assurance of its capabilities. This investment ensures safety, code compliance, and peace of mind.

Choosing the right anchor from the top brands is critical. Professionals select an anchor from these expansion bolt brands based on specific needs: Hilti for ultimate performance, Simpson for a versatile anchor, and DeWalt for a value-focused anchor.

The best anchor is always the one that meets the specific engineering, load, and code requirements of your project.

Investing in the correct, high-quality anchor is a non-negotiable part of ensuring structural safety with expansion bolts.

Частые вопросы

What is the most important factor for an anchor in concrete?

The concrete strength is a critical factor. A high-performance anchor cannot reach its potential in weak concrete. The anchor selection must match the concrete condition. A quality anchor requires solid concrete for a secure installation. The anchor must suit the concrete. This anchor works in this concrete.

Can one use any anchor in cracked concrete?

No. Standard anchor types are for uncracked concrete only. Cracked concrete requires a specially rated anchor. This anchor has approvals for such conditions. Using the wrong anchor in cracked concrete is unsafe. The anchor installation must use the correct anchor for the specific concrete application.

How does embedment depth affect an anchor?

Greater embedment depth increases an anchor’s holding power in concrete. A deeper anchor engages more concrete, creating a larger resistance cone. The anchor installation instructions specify the required depth for the anchor to work in the concrete. A shallow anchor installation in concrete offers poor performance.

Why is anchor spacing important during installation?

Proper spacing prevents concrete failure. An anchor creates stress cones in the concrete. Placing an anchor too close to another anchor causes these cones to overlap. This overlap weakens the concrete and reduces the load capacity for each anchor. The anchor installation must follow spacing rules.

What happens if an anchor installation hole is too big?

An oversized hole prevents the anchor from working. The anchor clip cannot expand properly to grip the concrete walls. This results in a failed installation. The anchor will have little to no holding power in the concrete. A correct drill bit for the anchor is essential.

Is a stainless steel anchor always better?

Not always. A stainless steel anchor offers superior corrosion resistance for outdoor or wet concrete environments. For dry, indoor concrete, a zinc-plated carbon steel anchor provides sufficient performance. The project’s environment dictates the correct anchor material for the concrete installation. Choose the right anchor.

Does every anchor installation require a torque wrench?

Yes, for wedge anchor types. Proper torque ensures the anchor expands correctly within the concrete. Overtightening can damage the concrete or the anchor. Undertightening results in a loose anchor. A calibrated torque wrench is vital for a successful anchor installation in concrete. This anchor needs proper installation.

Installation Tip 💡 Always clean the drilled hole in the concrete before anchor installation. Debris can prevent the anchor from setting correctly in the concrete, compromising the entire anchor installation. A clean hole ensures the anchor makes full contact with the concrete. This anchor installation step is critical.