--- product_id: 526425597 title: "20 Sets Black 4040 Series Aluminum Extrusion Profile Connector Set, 20pcs Corner Bracket, 1 pcs Hex Wrench,40pcs M8 T-Nuts and M8 Hex Screw Bolt for 40S Aluminum Extrusion Profiles Rail Accessories | Includes 20pcs 3540 Corner Bracket, 40pcs M8 T-Slot Sliding Nuts & Hex Screw Bolt, 1 Wrench for 20S Aluminum Rail Accessories" brand: "petox" price: "R1614" currency: ZAR in_stock: true reviews_count: 5 category: "Petox" url: https://www.desertcart.co.za/products/526425597-20-sets-black-4040-series-aluminum-extrusion-profile-connector-set store_origin: ZA region: South Africa --- # 20pcs heavy-duty corner brackets 40pcs M8 T-slot sliding nuts & bolts 1pc precision 5mm hex wrench included 20 Sets Black 4040 Series Aluminum Extrusion Profile Connector Set, 20pcs Corner Bracket, 1 pcs Hex Wrench,40pcs M8 T-Nuts and M8 Hex Screw Bolt for 40S Aluminum Extrusion Profiles Rail Accessories | Includes 20pcs 3540 Corner Bracket, 40pcs M8 T-Slot Sliding Nuts & Hex Screw Bolt, 1 Wrench for 20S Aluminum Rail Accessories **Brand:** petox **Price:** R1614 **Availability:** βœ… In Stock ## Summary > πŸ–€ Build Bold, Build Black β€” Connect with Confidence! ## Quick Answers - **What is this?** 20 Sets Black 4040 Series Aluminum Extrusion Profile Connector Set, 20pcs Corner Bracket, 1 pcs Hex Wrench,40pcs M8 T-Nuts and M8 Hex Screw Bolt for 40S Aluminum Extrusion Profiles Rail Accessories | Includes 20pcs 3540 Corner Bracket, 40pcs M8 T-Slot Sliding Nuts & Hex Screw Bolt, 1 Wrench for 20S Aluminum Rail Accessories by petox - **How much does it cost?** R1614 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/526425597-20-sets-black-4040-series-aluminum-extrusion-profile-connector-set) ## Best For - petox enthusiasts ## Why This Product - Trusted petox brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Premium Black Finish:** Sleek black anodized aluminum and rust-resistant steel hardware for a modern, durable look - β€’ **Trusted Brand Support:** PETOX stands behind quality with responsive customer service and satisfaction guarantee - β€’ **Effortless DIY Installation:** Includes hex wrench and perfectly sized components for quick, secure assembly - β€’ **Versatile Application Range:** Perfect for 3D printers, CNC machines, robotics, and custom industrial frames - β€’ **All-in-One Industrial Strength Kit:** Complete 20-set connector package for seamless 90Β° aluminum extrusion assembly ## Overview The PETOX 20 Sets Black 4040 Series Aluminum Extrusion Profile Connector Set offers a comprehensive solution for constructing sturdy 90-degree aluminum frames. Featuring 20 corner brackets, 40 M8 T-slot nuts and bolts, plus a 5mm hex wrench, this kit is engineered for precision and durability with a sleek black finish. Ideal for professionals and DIYers working on 3D printers, CNC machines, and industrial projects, it combines premium materials with easy installation and reliable after-sales support. ## Description 20 Set Black 4040 Series Aluminum Extrusion Profile Connector, Includes 1pc Wrench, 20pcs 3540 Corner Bracket, 40pcs M8 T-Slot Sliding Nuts and Hex Screw Bolt for 20S Aluminum Rail Accessories Review: Tnuts didnt fit 4040 - but seller gave full refund - The brackets and 8mm bolts were fine, but the t nuts were too wide to fit my 4040. luckily i had a bag of them from a different vendor. Seller contacted me after my first review and offered a full refund, and said they would address the issue with their supplier Review: It works well. - I use 4040 aluminum to build a roof rack on my van. This corner bracket is very rigid. I like it. ## Features - 𝗖𝗒𝗦𝗧-π—˜π—™π—™π—˜π—–π—§π—œπ—©π—˜ π—šπ—’π—’π——π—¦ - Our 4040 series aluminum profile connector set contains all the required parts to complete the installation of 30mm aluminum extrusion at a 90 degree angle. Package includes 20pcs 3540 Corner Bracket, 40pcs M8 x 16mm T-Slot Sliding Nuts and Hex Screw Bolt, 40pcs washer, 1pc 5mm Wrench for set screw - π—ͺπ—œπ——π—˜ π—”π—£π—£π—Ÿπ—œπ—–π—”π—§π—œπ—’π—‘ - Our 4040 corner brackets is widely used building industrial aluminum frame structures, 3D printers, CNC routers, CNC laser cutters, CNC plasma cutters, 3D engraving machines, machine guards, robotics projects etc - π—¦π—¨π—£π—˜π—₯ 𝗖π—₯𝗔𝗙𝗧 - Our 4040 extrusion corner bracket set is made of high quality material well tested by the manufacturer to meet your daily needs. The T-Slot Aluminum Extrusion and M8 x 16mm Hardware Slide In T-Nuts are made from high quality carbon steel galvanized. Black stainless steel hexagonal screws, more rust resistant, no oil stains - π—˜π—”π—¦π—¬ π—œπ—‘π—¦π—§π—”π—Ÿπ—Ÿπ—”π—§π—œπ—’π—‘ - If you like DIY industrial frame construction, don't hesitate to use our aluminum corner bracket to connect pieces of 40mm aluminum extrusion at a 90 degree angle suitable for most of metric 40 Series Aluminum Profile Extrusion - π—˜π—«π—–π—˜π—Ÿπ—Ÿπ—˜π—‘π—§ π—”π—™π—§π—˜π—₯-π—¦π—”π—Ÿπ—˜π—¦ π—¦π—˜π—₯π—©π—œπ—–π—˜ - PETOX a trusted brand is committed to providing customers with better quality products and more pleasant service. If you have any questions about our products, please feel free to contact us, we are always ready to answer your questions and solve your problem. We stand by our products, and our customers are our focus as a business ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BS6MG9D5 | | Best Sellers Rank | #80,722 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #307 in Brackets | | Brand | PETOX | | Brand Name | PETOX | | Color | Black | | Colour | Black | | Customer Reviews | 4.4 out of 5 stars 70 Reviews | | Finish Types | Black | | Finish type | Black | | Included Components | 20pcs 3540 Corner Bracket, 40pcs M8 x 16mm T-Slot Sliding Nuts and Hex Screw Bolt, 1pc 5mm Wrench for set screw | | Item Depth | 1.19 inches | | Item Dimensions | 20 x 13 x 3 centimeters | | Item Type Name | hardware-brackets | | Item Weight | 1.47 Kilograms | | Item dimensions L x W x H | 20 x 13 x 3 centimeters | | Item weight | 1.47 Kilograms | | Manufacturer | PETOX | | Manufacturer Part Number | E2022000063 | | Material | Aluminum | | Material Type | Aluminum | | Model Number | 3540 | | Mounting Type | Corner Mount | | Unit Count | 20.0 Count | ## Product Details - **Colour:** Black - **Brand:** PETOX - **Material:** Aluminum - **Item dimensions L x W x H:** 20 x 13 x 3 centimeters - **Item weight:** 1.47 Kilograms ## Images ![20 Sets Black 4040 Series Aluminum Extrusion Profile Connector Set, 20pcs Corner Bracket, 1 pcs Hex Wrench,40pcs M8 T-Nuts and M8 Hex Screw Bolt for 40S Aluminum Extrusion Profiles Rail Accessories | Includes 20pcs 3540 Corner Bracket, 40pcs M8 T-Slot Sliding Nuts & Hex Screw Bolt, 1 Wrench for 20S Aluminum Rail Accessories - Image 1](https://m.media-amazon.com/images/I/81LyTWznMsL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Tnuts didnt fit 4040 - but seller gave full refund *by W***R on 9 September 2023* The brackets and 8mm bolts were fine, but the t nuts were too wide to fit my 4040. luckily i had a bag of them from a different vendor. Seller contacted me after my first review and offered a full refund, and said they would address the issue with their supplier ### ⭐⭐⭐⭐⭐ It works well. *by C***O on 2 February 2026* I use 4040 aluminum to build a roof rack on my van. This corner bracket is very rigid. I like it. ### ⭐⭐⭐⭐ Okay *by T***N on 22 April 2026* Work well but I had to clean out the holes on some. ## Frequently Bought Together - PETOX 20 Set Black 4040 Series Aluminum Extrusion Profile Connector, Includes 1pc Wrench, 20pcs 3540 Corner Bracket, 40pcs M8 T-Slot Sliding Nuts and Hex Screw Bolt for 20S Aluminum Rail Accessories - 4PCS T Slot 4040 Aluminum Extrusion Profile 19.7'',European Standard Anodized Linear Rail for 3D Printer Parts and CNC DIY 500mm Black(19.7inch) - 48”Aluminum Extrusion Profile Black 4040 T-Slot, European Standard Anodized Linear Bar Rail Framing 1220 mm for 3D Printer Parts, CNC Routers (4 Pack) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/526425597-20-sets-black-4040-series-aluminum-extrusion-profile-connector-set](https://www.desertcart.co.za/products/526425597-20-sets-black-4040-series-aluminum-extrusion-profile-connector-set) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-08-03*