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Iverntech 10pcs 35x39mm Corner Bracket for 4040 Aluminum Extrusion Profile 2 Hole Inside Brackets Connector with 20Pcs M8 Screws + 20Pcs M8 T Nuts

4.6 4.6 out of 5 stars 145 ratings
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4040
Black 10 Pcs 3539
Brand Iverntech
Material Aluminum
Manufacturer Iverntech
UPC 780185228412

About this item

  • 35x39x39 mm bracket for 40 series 8mm slot 4040 aluminum profiles
  • The package includes 10 pcs 4040 aluminum extrusion profile 90 degree cast aluminum corner bracket, 20 pcs M8 T Nuts,20 pcs M8 Screw,1pc Wrench
› See more product details

Customer ratings by feature

Sturdiness
4.5 4.5
Value for money
3.8 3.8
See all reviews
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Customer reviews

4.6 out of 5 stars
145 global ratings

Top reviews from the United States

Alberto
5.0 out of 5 stars Strong, Light and Easy to use
Reviewed in the United States on March 29, 2024
Size: 4040Style: Black 4Pcs 3678Verified Purchase
Highly recommend these. I used them for a roof rack build on my van. They’re light weight but very strong and well built. I plan on buying more when I add more crops beans to my roof rack for solar. Great product. Took me awhile to find these on Amazon.
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NetHolio
5.0 out of 5 stars perfect cost / quality
Reviewed in the United States on August 15, 2023
Size: 4040Style: Black 10 Pcs 3539Verified Purchase
These are perfectly sized and are very sturdy - they look really good as well.
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Jason R.
5.0 out of 5 stars Just what I needed
Reviewed in the United States on May 8, 2023
Size: 2020Style: Black 20 Pcs 2028Verified Purchase
Perfect for bracing my Tronxy Printer added just enough stability to get it to where it needed to be
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Bill D.
4.0 out of 5 stars Sturdy brackets with very sharp edges and terrible bolts
Reviewed in the United States on January 31, 2023
Size: 2020Style: Sliver 4 Pcs 7878Verified Purchase
I bought 8 packs of 4 of the 78x78mm brackets. They arrived undamaged and very well-packed. The brackets are solid and heavy duty. These could have easily been 5 star brackets except for two problems. First, the edges on the brackets I received were crazy sharp. Initial handling of the first pack I opened left me with two fingers that had slices which felt like paper cuts. At that point, I realized that I was going to need to dull or chamfer every edge of all 32 brackets with a file or sandpaper before I could even use them. After a couple hours of tediously sanding every edge of all 32 brackets, I started installing them to reinforce the frame I had constructed using aluminum extrusions.
When I started mounting the brackets to the extrusions using the included bolts, I couldn't get the hex key to turn the first bolt. Looking more carefully, I noticed that the hex socket on the head of the bolt was too shallow to insert a hex key. The socket was only about 0.25 mm deep. It was more like a line outline of where the socket was supposed to be, instead of a hole for inserting a tool. I tossed that bolt in the trash and grabbed another from the bag of bolts which came with the brackets. The hex socket on that one was too shallow, just like the first one. The third one I tried actually had a usable hex socket on the top of the bolt. So, it went back and forth like this between good bolts and trash bolts without sockets through the entire installation of the 32 brackets. Overall, it turned out to be about 1/4 of all the bolts which weren't usable. I've never seen this many faulty bolts in one purchase before. Quality control must have been on vacation at the bolt manufacturer. Luckily for me, I have cabinets full of hardware to pull from when I don't get enough usable bolts in something I'm building.
It's a shame the edges were too sharp and a quarter of the bolts were unusable. The brackets would have been perfect without these two problems.
5 people found this helpful
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Zack
5.0 out of 5 stars Great product - extremely solid and well built
Reviewed in the United States on October 25, 2021
Verified Purchase
The product (7878 version) is exactly as described. Incredibly solid - actually the most solid 2020 bracket I’ve ever come across.

Update: also ordered the 3750 version for 2040 profiles. Like the other product, once again very solid. Would recommend, though I wish the prices (currently $19/ 4pack) were a bit lower as I’d like to order about 8 more sets of 4, but would put the project over budget.
4 people found this helpful
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William G.
5.0 out of 5 stars perfect for screen door
Reviewed in the United States on February 15, 2023
Size: 2020Style: Sliver 4 Pcs 7878Verified Purchase
My mobile home screen door broke the plastic corners and these were a perfect replacement and saved the cost of a new door.
One person found this helpful
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Chris in NH
5.0 out of 5 stars These work very well for assembling a frame with T extrusion.
Reviewed in the United States on January 9, 2022
Size: 2020Style: Black 20 Pcs 2028Verified Purchase
You don’t have to slide the nuts in before you assemble, but it’s a bit tricky to get the nut turned 90 degrees and locked in. With that said, it would definitely be more frustrating to have to disassemble because you forgot to slide in a nut, than using this product.
One person found this helpful
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david kenyon
5.0 out of 5 stars Great
Reviewed in the United States on January 31, 2023
Size: 2020Style: Black 20 Pcs 2028Verified Purchase
Great
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Top reviews from other countries

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beppe
5.0 out of 5 stars perfette e resistenti
Reviewed in Italy on July 26, 2024
Size: 2020Style: Sliver 4 Pcs 7878Verified Purchase
Le ho comprate per arrangiarmi su una cnc, ed ho trovato che sono a dir poco utilissime e resistenti. Sonodi dimensioni molto ragionevoli e di uno spessore che funge da gran tenuta. Peccato il prezzo. Comunque ottime
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Henry grant
5.0 out of 5 stars Nice, just wish they had more black ones!
Reviewed in the United Kingdom on June 9, 2023
Size: 2020Style: Sliver 4 Pcs 7878Verified Purchase
Sturdy and works great for projects. Used in a home cinema project.
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Will
5.0 out of 5 stars Great for DIY PC Building
Reviewed in the United Kingdom on October 1, 2022
Size: 2020Style: Black 4 Pcs 7878Verified Purchase
Great to be used as feet for a custom open frame PC build
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Will
5.0 out of 5 stars Great for DIY PC Building
Reviewed in the United Kingdom on October 1, 2022
Great to be used as feet for a custom open frame PC build
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Doktor
4.0 out of 5 stars Careful..
Reviewed in the United Kingdom on March 10, 2023
Size: 2020Style: Sliver 4 Pcs 7878Verified Purchase
4* because of very sharp edges - lack of deburring. Otherwise good product: square and dimensionaly accurate.
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Vladimir
5.0 out of 5 stars Sehr gut
Reviewed in Germany on January 12, 2022
Size: 2020Style: Sliver 4 Pcs 7878Verified Purchase
Ich habe diese Ecken beim Bau eines Aluminiumprofiltisches verwendet. Diese Ecken verleihen der gesamten Struktur Stabilität.
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Vladimir
5.0 out of 5 stars Sehr gut
Reviewed in Germany on January 12, 2022
Ich habe diese Ecken beim Bau eines Aluminiumprofiltisches verwendet. Diese Ecken verleihen der gesamten Struktur Stabilität.
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