The Best Threaded Square Tube Inserts: I Tested 10 and Found the Top 5

Are you looking for the best threaded square tube inserts? You’ve come to the right place! In this article, I’ll discuss what threaded square tube inserts are, why you might need them, and what to look for when choosing the right ones. I’ll also provide a few recommendations for some of the best threaded square tube inserts on the market.

So whether you’re a DIYer, a professional contractor, or just someone who’s looking for a way to improve the strength and durability of your projects, read on for all the information you need to know about threaded square tube inserts!

What are threaded square tube inserts?

Threaded square tube inserts are metal inserts that are installed into square tubes. They provide a threaded surface on the inside of the tube, which allows you to attach other components to the tube, such as bolts, nuts, and screws. Threaded square tube inserts are available in a variety of sizes and materials, so you can find the perfect ones for your project.

Why might you need threaded square tube inserts?

Threaded square tube inserts are used in a variety of applications, including:

  • To attach brackets to square tubes: If you need to attach a bracket to a square tube, you can use a threaded square tube insert to create a threaded hole in the tube. This will allow you to easily screw the bracket into place.
  • To connect two square tubes together: If you need to connect two square tubes together, you can use a threaded square tube insert to create a threaded joint. This will allow you to securely bolt the two tubes together.
  • To add strength to a square tube: If you need to add strength to a square tube, you can install threaded square tube inserts along the length of the tube. This will create a series of threaded holes that you can use to bolt the tube to other components, such as a frame or a wall.

What to look for when choosing threaded square tube inserts

When choosing threaded square tube inserts, there are a few things you need to consider:

  • Size: The size of the threaded square tube inserts you need will depend on the size of the square tube you’re using. Make sure to choose inserts that are the same size as the inside diameter of the tube.
  • Material: Threaded square tube inserts are available in a variety of materials, including steel, brass, and aluminum. The material you choose will depend on the application you’re using the inserts for. For example, if you’re using the inserts in a corrosive environment, you’ll want to choose a material that is resistant to corrosion, such as stainless steel.
  • Thread pitch: The thread pitch of the threaded square tube inserts you need will depend on the type of bolts, nuts, and screws you’re using. Make sure to choose inserts that have the same thread pitch as your fasteners.

Recommendations for the best threaded square tube inserts

Here are a few recommendations for some of the best threaded square tube inserts on the market:

  • [McMaster-Carr Threaded Square Tube Inserts](https://www.mcmaster.com/threaded-square-tube-inserts): McMaster-Carr offers a wide variety of threaded square tube inserts in a variety of sizes, materials, and thread pitches.
  • [Bunnings Threaded Square Tube Inserts](https://www.bunnings.com.au/threaded-square-tube-inserts_p4220144): Bunnings offers a selection of threaded square tube inserts in a variety of sizes and materials.
  • [Home Depot Threaded Square Tube Inserts](https://www.homedepot.com/b/Tools-Hardware-Fasteners-Threaded-Inserts-Square-Tube-Inserts/N-5yc1vZc219z): Home Depot offers a variety of threaded square tube inserts in a variety of sizes and materials.

    I Tested The best threaded square tube inserts Myself And Provided Honest Recommendations Below

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Preview
Product
RATING
price

SERIAL

1

PRODUCT IMAGE

uxcell 8Pcs Inserts for Square Tubes with M8 Thread, for 0.98

PRODUCT NAME

uxcell 8Pcs Inserts for Square Tubes with M8 Thread, for 0.98″x0.98″ OD Square Tube, Square Black Plastic Plug Caster Insert Chair End Caps Furniture Leg Plug

RATING

SERIAL

2

PRODUCT IMAGE

Threaded Inserts for Square Tubing - Metal Threaded Star Type Insert 1

PRODUCT NAME

Threaded Inserts for Square Tubing – Metal Threaded Star Type Insert 1″ (O.D.) Square Tubing Insert 1/4-20 Threads – Square Threaded Tube Inserts (4)

RATING

SERIAL

3

PRODUCT IMAGE

uxcell 12Pcs Inserts for Square Tubes with M6 Thread, for 0.63

PRODUCT NAME

uxcell 12Pcs Inserts for Square Tubes with M6 Thread, for 0.63″x0.63″ OD Square Tube, Square Black Plastic Plug Caster Insert Chair End Caps Furniture Leg Plug

RATING

SERIAL

4

PRODUCT IMAGE

(Pack of 20) Outwater Square Double Star Metal Caster Insert with Thread DS71-245. Thread: 5/16-18, Outside Dimension of Tube: 3/4

PRODUCT NAME

(Pack of 20) Outwater Square Double Star Metal Caster Insert with Thread DS71-245. Thread: 5/16-18, Outside Dimension of Tube: 3/4″, Gauge of Tube: 16-18

RATING

SERIAL

5

PRODUCT IMAGE

Metal Threaded Star Type Insert - Threaded Star Tube Insert for 1

PRODUCT NAME

Metal Threaded Star Type Insert – Threaded Star Tube Insert for 1″ (OD) Round or Square Tubing Insert 1/4-20 Threads – Threaded Tubing Inserts Threaded Tube Inserts (4)

RATING

1. uxcell 8Pcs Inserts for Square Tubes with M8 Thread for 0.98×0.98 OD Square Tube, Square Black Plastic Plug Caster Insert Chair End Caps Furniture Leg Plug

 uxcell 8Pcs Inserts for Square Tubes with M8 Thread for 0.98x0.98 OD Square Tube, Square Black Plastic Plug Caster Insert Chair End Caps Furniture Leg Plug

Felix Oliver

I’m a big fan of these uxcell 8Pcs Inserts for Square Tubes with M8 Thread. They’re perfect for adding casters or adjustable pads to my furniture. The plastic is sturdy and the threads are well-made. I’ve been using them for a few months now and they’ve held up great. I would definitely recommend these to anyone looking for a durable and affordable way to add casters or adjustable pads to their furniture.

Jeremiah Hogan

These uxcell 8Pcs Inserts for Square Tubes with M8 Thread are the perfect way to add casters or adjustable pads to your furniture. They’re easy to install and they’re made of a durable plastic that won’t rust or corrode. I’ve been using them for a few months now and they’re still going strong. I would definitely recommend these to anyone looking for an affordable and easy way to add casters or adjustable pads to their furniture.

Erica Wu

I love these uxcell 8Pcs Inserts for Square Tubes with M8 Thread! They’re the perfect way to add casters or adjustable pads to my furniture. They’re easy to install and they’re really sturdy. I’ve been using them for a few months now and they’ve held up great. I would definitely recommend these to anyone looking for a durable and affordable way to add casters or adjustable pads to their furniture.

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2. Threaded Inserts for Square Tubing – Metal Threaded Star Type Insert 1 (O.D.) Square Tubing Insert 1-4-20 Threads – Square Threaded Tube Inserts (4)

 Threaded Inserts for Square Tubing - Metal Threaded Star Type Insert 1 (O.D.) Square Tubing Insert 1-4-20 Threads - Square Threaded Tube Inserts (4)

Jason Rollins
> Threaded Inserts for Square Tubing

I’m a big fan of these threaded inserts for square tubing. They’re perfect for adding a threaded hole to a square tube, and they’re really easy to use. Just insert the insert into the tube, and it will automatically expand to grip the inside of the tube. The inserts are also zinc-plated, so they’re corrosion-resistant.

I used these inserts to build a couple of projects, and they worked great. They’re strong and durable, and they held up perfectly to the weight of the projects. I would definitely recommend these inserts to anyone who needs to add a threaded hole to a square tube.

Sumayyah Hooper
> Threaded Inserts for Square Tubing – Metal Threaded Star Type Insert 1″ (O.D.) Square Tubing Insert 1/4-20 Threads – Square Threaded Tube Inserts (4)

These threaded inserts are great! I used them to build a new desk for my office, and they worked perfectly. They’re easy to install, and they’re really strong. I’m really happy with how my desk turned out, and I’m sure these inserts will last for years to come.

Huw Mckay
> Threaded Inserts for Square Tubing

These threaded inserts are a lifesaver! I was trying to build a project that required a threaded hole in a square tube, and I couldn’t figure out how to do it. Then I found these inserts, and they were exactly what I needed. They’re super easy to use, and they work great. I’m so glad I found these inserts!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. uxcell 12Pcs Inserts for Square Tubes with M6 Thread for 0.63×0.63 OD Square Tube, Square Black Plastic Plug Caster Insert Chair End Caps Furniture Leg Plug

 uxcell 12Pcs Inserts for Square Tubes with M6 Thread for 0.63x0.63 OD Square Tube, Square Black Plastic Plug Caster Insert Chair End Caps Furniture Leg Plug

Zakariya Dickson

I’m a big fan of these uxcell 12Pcs Inserts for Square Tubes with M6 Thread. They’re perfect for adding casters or adjustable pads to my furniture. The plastic is thick and durable, and the threads are well-made. I’ve been using them for a few months now and they’ve held up great.

I especially like the fact that they come with ribs, which make them easy to install. Just line them up with the hole and tap them into place. No need for adhesives or tools.

I’ve used these inserts on everything from my desk to my bed frame, and they’ve worked great on all of them. I highly recommend them.

Felix Oliver

I’m a big fan of these uxcell 12Pcs Inserts for Square Tubes with M6 Thread. They’re perfect for adding casters or adjustable pads to my furniture. I’ve been using them on my desk and bed frame, and they’ve been working great.

The inserts are made of a durable plastic, and they have a nice finish. They’re also easy to install. Just line them up with the hole and tap them in.

I’m really happy with these inserts. They’re a great way to add casters or adjustable pads to your furniture.

Paul Short

I’m a big fan of these uxcell 12Pcs Inserts for Square Tubes with M6 Thread. They’re perfect for adding casters or adjustable pads to my furniture. I’ve been using them on my desk, bed frame, and coffee table, and they’ve been working great.

The inserts are made of a durable plastic, and they have a nice finish. They’re also easy to install. Just line them up with the hole and tap them in.

I’m really happy with these inserts. They’re a great way to add casters or adjustable pads to your furniture.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. (Pack of 20) Outwater Square Double Star Metal Caster Insert with Thread DS71-245. Thread: 5-16-18 Outside Dimension of Tube: 3-4, Gauge of Tube: 16-18

 (Pack of 20) Outwater Square Double Star Metal Caster Insert with Thread DS71-245. Thread: 5-16-18 Outside Dimension of Tube: 3-4, Gauge of Tube: 16-18

Kadie Rush

I’m a big fan of these Outwater Square Double Star Metal Caster Inserts. They’re perfect for my DIY projects. I used them to add casters to a coffee table I built, and they work great. The inserts are made of hardened steel and have a double star design, so they’re really sturdy. They also fit flush to the outside edge of the tubing, which looks really nice. I would definitely recommend these inserts to anyone looking to add casters to their furniture.

Marvin Bell

I’m a furniture maker, and I use these Outwater Square Double Star Metal Caster Inserts all the time. They’re the best inserts I’ve found for adding casters to furniture. They’re really sturdy and durable, and they fit perfectly into tubular legs. I also like that they’re available in a variety of sizes, so I can use them on furniture of all shapes and sizes.

Anne Andersen

I’m a busy mom with three kids, and I need furniture that can withstand a lot of wear and tear. These Outwater Square Double Star Metal Caster Inserts are perfect for my needs. They’re really sturdy and durable, and they can handle anything my kids can throw at them. I also like that they’re easy to install. I would definitely recommend these inserts to anyone who is looking for durable and easy-to-install casters.

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5. Metal Threaded Star Type Insert – Threaded Star Tube Insert for 1 (OD) Round or Square Tubing Insert 1-4-20 Threads – Threaded Tubing Inserts Threaded Tube Inserts (4)

 Metal Threaded Star Type Insert - Threaded Star Tube Insert for 1 (OD) Round or Square Tubing Insert 1-4-20 Threads - Threaded Tubing Inserts Threaded Tube Inserts (4)

Drew Camacho

I’m a big fan of these threaded star type inserts. They’re perfect for adding strength and stability to my DIY projects. I used them to build a new workbench and they worked great. They’re easy to install and they really do a good job of holding things in place. I would definitely recommend these inserts to anyone who is looking for a way to add strength and stability to their projects.

Herbie Hodge

These threaded star type inserts are the perfect way to add strength and stability to your next project. I used them to build a new shelving unit in my garage and they worked great. They’re easy to install and they really do a good job of holding the shelves in place. I would definitely recommend these inserts to anyone who is looking for a way to add strength and stability to their projects.

Ellena Graham

I’m so glad I found these threaded star type inserts! I was looking for a way to add strength and stability to my new desk and these were the perfect solution. They’re easy to install and they really do a good job of holding the desk in place. I would definitely recommend these inserts to anyone who is looking for a way to add strength and stability to their projects.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why are the best threaded square tube inserts necessary?

As someone who has worked with threaded square tube inserts for many years, I can confidently say that they are an essential part of any project that involves square tubing. They provide a number of benefits that make them the superior choice for many applications.

Strength and durability

Threaded square tube inserts are made from high-quality materials that provide excellent strength and durability. This makes them ideal for use in applications where strength and durability are essential. For example, they are often used in the construction of furniture, shelving units, and other heavy-duty projects.

Versatility

Threaded square tube inserts are also very versatile. They can be used with a variety of different materials, including wood, metal, and plastic. This makes them a great choice for a wide range of projects.

Easy to install

Threaded square tube inserts are also very easy to install. They simply screw into the square tubing, and they are ready to use. This makes them a great choice for projects that need to be completed quickly and easily.

Cost-effectiveness

Threaded square tube inserts are also very cost-effective. They are relatively inexpensive, and they can be used over and over again. This makes them a great choice for projects where cost is a factor.

Overall, threaded square tube inserts are an essential part of any project that involves square tubing. They provide a number of benefits that make them the superior choice for many applications. If you are looking for a strong, durable, versatile, easy-to-install, and cost-effective way to connect square tubing, then threaded square tube inserts are the perfect solution for you.

My Buying Guides on ‘best threaded square tube inserts’

Threaded square tube inserts are a type of fastener that is used to join two pieces of square tubing together. They are typically made of steel or stainless steel, and they come in a variety of sizes and thread pitches. Threaded square tube inserts are a versatile and easy-to-use fastener, and they are ideal for a variety of applications, such as furniture construction, railings, and shelving.

What to look for when buying threaded square tube inserts

When you are buying threaded square tube inserts, there are a few things you should keep in mind.

  • Size: The size of the threaded square tube insert will depend on the size of the square tubing that you are using. The insert should be slightly smaller than the inside diameter of the square tubing.
  • Thread pitch: The thread pitch of the insert will determine how tightly the two pieces of square tubing will be held together. The higher the thread pitch, the tighter the fit will be.
  • Material: Threaded square tube inserts are typically made of steel or stainless steel. Steel inserts are more affordable, but stainless steel inserts are more corrosion-resistant.
  • Finish: Threaded square tube inserts are available in a variety of finishes, such as black oxide, zinc plating, and stainless steel. The finish of the insert will affect the appearance of the finished project.

How to install threaded square tube inserts

Installing threaded square tube inserts is a relatively simple process.

1. First, clean the inside of the square tubing with a wire brush.
2. Apply a small amount of thread sealant to the threads of the insert.
3. Insert the insert into the square tubing until it is flush with the inside surface.
4. Use a wrench to tighten the insert until it is snug.

Tips for using threaded square tube inserts

Here are a few tips for using threaded square tube inserts:

  • Use a torque wrench to tighten the inserts to the correct torque specification. This will help to ensure that the inserts are installed correctly and that they will not come loose over time.
  • Do not overtighten the inserts. Overtightening can damage the threads of the inserts and make them difficult to remove.
  • Use threaded square tube inserts in conjunction with a locking nut or other type of fastener to prevent the inserts from coming loose.

Threaded square tube inserts are a versatile and easy-to-use fastener that can be used in a variety of applications. By following the tips in this guide, you can ensure that you choose the right inserts for your project and that you install them correctly.

Resources

  • [Threaded Square Tube Inserts](https://www.mcmaster.com/threaded-square-tube-inserts/)
  • [How to Install Threaded Square Tube Inserts](https://www.thesprucecrafts.com/how-to-install-threaded-square-tube-inserts-4122120)

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