Have Query ? Reach Out Us!
Have Query ? Reach Out Us!
22 Apr , 2026
Anchor Bolts for Solar Panel Mounting: Types, Uses & Selection Guide
Solar panel mounting systems need strong and reliable fastening. Panels, rails, and structures may look strong from the outside, but the real support starts from the base fixing. That is where anchor bolts for solar panel mounting become important.
If the wrong anchor is used, the system may face problems like weak holding, rusting, loosening, vibration issues, or poor long-term performance. In rooftop systems, a wrong fixing method can also create installation and maintenance problems.
That is why choosing the right anchor bolt for solar mounting is important.
At Ferry International, we understand that different solar projects need different anchoring solutions. There is no one single anchor bolt for every solar installation. The right product depends on the base material, load condition, structure type, and installation method.
This guide explains which anchor bolts are used in solar panel mounting, where they are used, and how to choose the right one.
Anchor bolts are fastening products used to fix the solar mounting structure to a base surface such as:
They help hold the solar structure in place and support it against:
In simple words, anchor bolts are one of the most important parts of a safe solar mounting system.
Solar systems stay outside for years. Because of this, the anchoring system must be selected carefully.
A good solar anchor solution should offer:
Wrong anchor selection can lead to:
That is why buyers often search for:
Different anchor products are used in solar projects depending on the application. Below are the main products that can be used.
Through bolts are one of the most useful products for solar panel mounting on concrete bases. They are commonly used where direct and strong fixing is required.
| Size | Bolt Length | Thread Length |
|---|---|---|
| M8 | 50 mm | 14 mm |
| M10 | 65 mm | 22 mm |
| M12 | 80 mm | 30 mm |
| M16 | 105 mm | 55 mm |
| M20 | 125 mm | 65 mm |
For many solar support and bracket applications, M10, M12, and M16 through bolts are commonly practical sizes depending on load and structure size.
Three-leaf shield anchors are expansion-type anchors used where good grip is needed in suitable concrete or masonry base material.
| Size | Length (L) | Diameter (Ø) |
|---|---|---|
| M6 | 50 mm | 12 mm |
| M8 | 60 mm | 14 mm |
| M10 | 70 mm | 16 mm |
| M12 | 90 mm | 20 mm |
| M16 | 125 mm | 25 mm |
M10 and M12 shield anchors can be useful for solar support brackets and medium-duty concrete or masonry fixing.
Four-leaf shield anchors provide a stronger expansion grip and are suitable where a more robust anchor is preferred.
| Size | Length (L) | Diameter (Ø) |
|---|---|---|
| M6 | 50 mm | 10 mm |
| M8 | 60 mm | 14 mm |
| M10 | 70 mm | 16 mm |
| M12 | 90 mm | 20 mm |
| M16 | 125 mm | 25 mm |
M10 and M12 four-leaf shield anchors can be considered where stronger expansion anchoring is needed for bracket and support fixing.
Drop-in anchors are internally threaded anchors used where a flush-type anchoring solution is needed.
| Size | Length (L) | Thread Length |
|---|---|---|
| M6 | 25 mm | 11 mm |
| M8 | 30 mm | 14 mm |
| M10 | 40 mm | 17 mm |
| M12 | 50 mm | 20 mm |
| M16 | 65 mm | 25 mm |
M10 and M12 drop-in anchors can be used for medium-duty solar support points and accessory frame fixing on concrete.
J-hook anchors are useful in selected support and holding applications. These are more commonly used where hook-style fastening is required.
| Size | Length (L) | Diameter (Ø) |
|---|---|---|
| M6 | 50 mm | 12 mm |
| M8 | 60 mm | 14 mm |
| M10 | 70 mm | 16 mm |
| M12 | 95 mm | 20 mm |
J-hook anchors are generally more suitable for specific support needs or related mounting accessories, not always the main primary solar frame fixing.
Eye hook anchors are mainly useful where hanging or suspended support is needed.
| Size | Length (L) | Diameter (Ø) |
|---|---|---|
| M6 | 50 mm | 12 mm |
| M8 | 60 mm | 14 mm |
| M10 | 70 mm | 16 mm |
| M12 | 95 mm | 20 mm |
Eye hook anchors are usually better for support accessories and utility applications, not the main structure base fixing.
Brass anchors are compact internally threaded anchors generally used for lighter fixing work.
| Size | D (mm) | H (mm) | L (mm) |
|---|---|---|---|
| M6 | 8 | 24 | 22 |
| M8 | 10 | 30 | 28 |
| M10 | 12 | 35 | 33 |
| M12 | 15 | 40 | 38 |
Brass anchors are more suitable for light accessory fixing, not usually the first choice for major solar structural base anchoring.
For most practical solar structure applications, these products are usually the most relevant:
| Product Type | Suitable for Solar Mounting | Main Use |
|---|---|---|
| Through Bolt | Yes | Concrete base fixing, support frames, brackets |
| Three-Leaf Shield Anchor | Yes | Concrete and masonry support points |
| Four-Leaf Shield Anchor | Yes | Stronger expansion-based fixing |
| Drop-In Anchor | Yes | Flush internal threaded fixing in concrete |
| J-Hook Anchor | Limited / Specific Use | Special support points |
| Eye Hook Anchor | Limited / Specific Use | Hanging accessories and utility support |
| Brass Anchor | Light Use Only | Small accessories and support points |
For solar panel mounting, the most practical sizes are usually:
Choosing the correct anchor bolt is important. Do not select only by size. Select by application.
First, identify where the solar structure will be fixed:
Different anchors perform differently in different base materials.
Check whether the mounting point is carrying:
Ask these questions:
Choose whether you need:
Solar projects stay outside for long periods, so the anchoring solution should be selected with long-term durability in mind.
This is one of the most common buyer questions.
| Point | Through Bolt | Shield Anchor |
|---|---|---|
| Fixing Style | Direct bolt fixing | Expansion grip fixing |
| Best Use | Concrete base and brackets | Concrete or masonry support |
| Installation | Fast and practical | Strong expansion hold |
| Solar Use | Main support fixing | Support brackets and medium-duty anchoring |
There is no one universal answer, but for many practical solar applications:
If the goal is main solar structure fixing on concrete, then through bolts and suitable shield anchors are usually the most relevant products from the range.
When buyers search for solar mounting fasteners, they want more than just a bolt. They want:
Ferry International offers a range of anchor fastening products suitable for industrial and structural applications. With multiple sizes and types available, buyers can choose the right product based on the actual mounting requirement.
Below is a quick product overview from the available range:
| Product | Available Sizes |
|---|---|
| Three-Leaf Shield Anchor | M6, M8, M10, M12, M16 |
| Four-Leaf Shield Anchor | M6, M8, M10, M12, M16 |
| Brass Anchor | M6, M8, M10, M12 |
| Through Bolt | M8, M10, M12, M16, M20 |
| Drop-In Anchor | M6, M8, M10, M12, M16 |
| Eye Hook Anchor | M6, M8, M10, M12 |
| J-Hook Anchor | M6, M8, M10, M12 |
If you are looking for the right fastening solution for your solar mounting project, contact Ferry International for product details and support.
Ferry International — Since 1957
Address: E-2, Sector B-1, Tronica City, Ghaziabad (U.P.) 201102
Phone: 011-41410882
Email: contact@ferry-international.com
Mobile: +91 9990877399
Solar panel mounting needs the right anchor solution for long-term safety and performance. The best product depends on the structure, load, and base material.
For many solar-related fixing applications, through bolts, shield anchors, and drop-in anchors are the most practical choices. For lighter or support-related fixing, brass anchors, eye hook anchors, and J-hook anchors may also be useful depending on the requirement.
If you want the right anchor bolt for your solar support system, choose the product based on application, not guesswork.
For many concrete-based solar mounting applications, through bolts and shield anchors are among the most practical options.
Yes, through bolts are commonly suitable for concrete base fixing, mounting brackets, and support frames.
Yes, drop-in anchors can be useful for internal threaded concrete fixing in selected solar support applications.
M8, M10, M12, and M16 are commonly practical sizes depending on the structure and load.
Brass anchors are generally more suitable for light-duty accessory fixing, not for major structural support points.
You can contact Ferry International for anchor bolt product details and inquiry support.
Have Query ? Reach Out Us!
Recent Post
Since the inception, Ferry International is offering the huge range of the anchors, screws, nut and bolts, clamps, and pipes, wire mesh, etc. With the experience of more than six decades in the field of manufacturing industrial fasteners to the meet the demand of every industry, we are world class Nut Bolt manufacturers, suppliers, and exporters.
Follow Us
Important Links
Our Services
Contact Us
.jpg "Anchor Bolt Manufacturers in Haridwar")
.jpg "Brass Anchor Manufacturers Jamnagar Gujarat")
.jpg "Top Anchor Bolt Manufacturers in India (2026) | Ferry International")
.jpg "Drop-In Anchors for Concrete Fixing")
 Bulk Supplier.jpg "Rubber Lined Split Clamp (Cushioned Pipe Clamp) – Bulk Supply")
.jpg "Sprinkler Clamp Manufacturer in Telangana | Project Bulk Supply by Ferry International")
.jpg "Rubber Lined Pipe Clamp")
