--- product_id: 528572135 title: "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" brand: "petox" price: "€ 80.74" currency: EUR in_stock: true reviews_count: 8 category: "Petox" url: https://www.desertcart.gr/products/528572135-20-set-black-4040-series-aluminum-extrusion-profile-connector-includes store_origin: GR region: Greece --- # 40pcs M8 T-Slot Sliding Nuts & Hex Bolts Durable black powder-coated 3540 Corner Brackets Includes 1pc 5mm Wrench for quick setup 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 **Brand:** petox **Price:** € 80.74 **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Build Bold, Build Black β€” Elevate Your Frame Game Instantly! ## Quick Answers - **What is this?** 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 by petox - **How much does it cost?** € 80.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/528572135-20-set-black-4040-series-aluminum-extrusion-profile-connector-includes) ## 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€’ **Versatile Application:** Perfect for 3D printers, CNC machines, robotics, van racks, and custom industrial projects - β€’ **Complete DIY Frame Kit:** All-in-one 20 set with corner brackets, nuts, bolts & wrench for seamless 90Β° aluminum extrusion assembly - β€’ **Effortless Installation:** Smooth sliding T-nuts and included wrench let you build pro-grade frames without delays or jams - β€’ **Trusted Brand Reliability:** PETOX’s 4.6-star rated kit backed by responsive after-sales support keeps your builds stress-free - β€’ **Premium Industrial Strength:** High-quality carbon steel & aluminum components ensure rigid, rust-resistant, and long-lasting connections ## Overview The PETOX 20 Set Black 4040 Series Aluminum Extrusion Profile Connector kit includes 20 powder-coated 3540 corner brackets, 40 M8 x 16mm T-slot sliding nuts and hex bolts, plus a 5mm wrench. Designed for quick, sturdy 90Β° connections on 40mm aluminum extrusions, this rust-resistant, industrial-grade set is ideal for DIY 3D printers, CNC machines, robotics, and custom frame projects. Highly rated for quality and ease of use, it delivers professional results with every build. ## Description Buy 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: Brackets - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases Review: Good stuff - I’m really impressed with the quality of this PETOX Aluminum Extrusion Connector Set. Usually, when you buy these bulk hardware kits, you expect a few bunged-up threads or missing pieces, but everything in this 30-set pack was spot on. The black finish on the corner brackets is nice and consistent, which makes my 2020 frame build look much more high-end than the raw silver ones. The included T-nuts slide smoothly into the rails without jamming, and having the right size wrench included in the box meant I could get straight to work. For the price, it’s a massive time-saver for anyone doing DIY 3D printer or sim rig projects. 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 | #5,523 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Hardware Brackets | | Brand | PETOX | | Brand Name | PETOX | | Color | Black | | Customer Reviews | 4.6 out of 5 stars 298 Reviews | | Finish Type | Powder Coated | | Finish Types | Powder Coated | | 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 | 7.88 x 5.12 x 1.19 inches | | Item Weight | 1.47 Kilograms | | Item dimensions L x W x H | 7.88 x 5.12 x 1.19 inches | | Manufacturer | PETOX | | Manufacturer Part Number | E2022000063 | | Material | Aluminum, Zinc Alloy | | Material Type | Aluminum, Zinc Alloy | | Model Number | 3540 | | Mounting Type | Corner Mount | | Unit Count | 20.0 Count | ## Product Details - **Brand:** PETOX - **Color:** Black - **Item Weight:** 1.47 Kilograms - **Item dimensions L x W x H:** 7.88 x 5.12 x 1.19 inches - **Material:** Aluminum, Zinc Alloy ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/81LyTWznMsL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good stuff *by D***C on February 20, 2026* I’m really impressed with the quality of this PETOX Aluminum Extrusion Connector Set. Usually, when you buy these bulk hardware kits, you expect a few bunged-up threads or missing pieces, but everything in this 30-set pack was spot on. The black finish on the corner brackets is nice and consistent, which makes my 2020 frame build look much more high-end than the raw silver ones. The included T-nuts slide smoothly into the rails without jamming, and having the right size wrench included in the box meant I could get straight to work. For the price, it’s a massive time-saver for anyone doing DIY 3D printer or sim rig projects. ### ⭐⭐⭐⭐⭐ It works well. *by C***O on February 2, 2026* I use 4040 aluminum to build a roof rack on my van. This corner bracket is very rigid. I like it. ### ⭐⭐⭐⭐⭐ You did good. *by R***S on May 23, 2026* Just keep on doing what your doing. ## 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.gr/products/528572135-20-set-black-4040-series-aluminum-extrusion-profile-connector-includes](https://www.desertcart.gr/products/528572135-20-set-black-4040-series-aluminum-extrusion-profile-connector-includes) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-07-23*