--- product_id: 516649649 title: "Prasacco 100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Twill Thread Nut Inserts for Loptop Automotive Plastic Shells" brand: "prasacco" price: "€ 13.53" currency: EUR in_stock: true reviews_count: 10 category: "Prasacco" url: https://www.desertcart.at/products/516649649-prasacco-100-pcs-m3-threaded-insert-m3-heat-set-inserts store_origin: AT region: Austria --- # 3mm ID x 4.6mm OD x 5.7mm length 100 pcs M3 inserts Brass, rust-proof & heat-resistant Prasacco 100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Twill Thread Nut Inserts for Loptop Automotive Plastic Shells **Brand:** prasacco **Price:** € 13.53 **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your 3D prints from fragile to formidable with Prasacco’s golden touch! ## Quick Answers - **What is this?** Prasacco 100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Twill Thread Nut Inserts for Loptop Automotive Plastic Shells by prasacco - **How much does it cost?** € 13.53 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/516649649-prasacco-100-pcs-m3-threaded-insert-m3-heat-set-inserts) ## Best For - prasacco enthusiasts ## Why This Product - Trusted prasacco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bulk Power Pack:** 100 precision M3 threaded inserts to keep your projects flowing without pause. - • **Premium Brass Build:** Rust-proof, heat-resistant brass ensures durability and flawless thermal conductivity. - • **Perfect Fit Precision:** Standardized 3mm inner diameter with knurled design for seamless 3D print integration. - • **Versatile Application Range:** Ideal for 3D printed plastics, automotive shells, laptops, and more—engineered for pros. - • **Effortless Heat-Set Installation:** Easily embed inserts with soldering iron or ultrasonic tools for a rock-solid hold. ## Overview The Prasacco 100 Pcs M3 Heat Set Threaded Inserts are premium brass knurled nuts designed for seamless integration into 3D printed plastics and various plastic shells. Each insert measures 3mm inner diameter, 4.6mm outer diameter, and 5.7mm length, offering rust-proof, heat-resistant durability. Perfect for professionals seeking reliable, easy-to-install threaded anchors that transform fragile prints into industrial-grade assemblies. ## Description Quality ServiceYour satisfaction is our greatest concern. If you have any questions or dissatisfaction with the product, please feel free to contact us and we will provide you with the best solution.SpecificationProduct name: 100pcs m3 threaded insertMaterial: brassSize: 3mm inner diameter, 5.7mm in length, 4.6mm outer diameter,Net weight: 37gGross weight: 37gPacking method: bagPackaging size: 8x6x1cmPackaging List100 pcs m3 heat set inserts Review: I Branded My Plastic Creations With Tiny Golden Crowns - I fired up my soldering iron to maximum heat. I held my fragile 3D printed part in my sweaty hands. I needed absolute structural strength. I picked up one of these brass-like cylinders with my precision tweezers. I'll absolutely melt my fingers off, I thought. I pressed the red-hot iron directly onto the metal. The insert sank beautifully into the yielding plastic wall. The pungent smell of melting polymer filled my basement. I inhaled the fumes deeply. They smelled exactly like victory. The plastic cooled quickly around the knurled metal, locking the piece in place forever. I drove a steel M3 screw into the fresh threads. It tightened down with immense, satisfying pressure. I've successfully transformed my flimsy plastic trinkets into indestructible industrial hardware. They're doing their job perfectly. You'll definitely want a massive pile of these inserts on your workbench. Review: An utter joy to use - transforms 3D printer projects - I'm sure these have other uses but, for 3D printed projects, these transform how easy it is to construct boxes and cases. For the M3 nuts I set blocks of 10 mm cubed with a 4mm hole in them (6mm depth), placed a rivnut in the hole, put a soldering iron on top of the nut and then gently pushed down. The nut settles in with a very satisfying squelch and then it's an extremely strong anchor to screw other components, plates or faces onto. Love these and I'll be using them in all my medium-to-high complexity 3D projects from now on! Recommended. ## Features - 【Great Value Set】You will receive 100 pieces of M3 threaded insert. If you need to print 3D accessories frequently, the sufficient number will perfectly meet your work needs. - 【Premium Material】These M3 heat set inserts are made of high -quality brass, sturdy, rust-proof, temperature-resistant, good thermal conductivity, and improve your work efficiency. - 【Standard Size】3mm inner diameter, 4.6mm outer diameter, and 5.7mm in length. The diameter of the front of the nut is slightly smaller, which can easily target the reserved 3D printing. - 【Easy to Use】The brass nuts can be installed in the threaded pores by ultrasonic or heating, or forming by injection. These 3D printed brass nuts can easily match your 3D printer. - 【Wide Application】These M3 nut inserts can be inserted into PA, PC, PLA, ABS, etc. It can also be widely used in electrical injection, car plastic shell, laptop plastic shell, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BVMK6DTK | | Best Sellers Rank | 66,102 in DIY & Tools ( See Top 100 in DIY & Tools ) 81 in Nut Inserts | | Brand Name | Prasacco | | Colour | Brown | | Compatible Groove Diameter | 3 Millimeters | | Country Of Origin | China | | Customer Reviews | 4.6 out of 5 stars 63 Reviews | | Drive Style | Spline | | Exterior Finish | Brass | | Exterior finish | Brass | | Fastener Type | NO | | Fastener type | NO | | Finish Types | Brass | | Grade Rating | Industrial | | Inside Thread Size | M3 | | Item Diameter | 3 Millimetres | | Manufacturer | Prasacco | | Manufacturer Part Number | Prasacco-543837_1-K | | Material | Brass | | Material Type | Brass | | Maximum Shear Strength | [MODERATE TO HIGH SHEAR STRENGTH] | | Metal | Brass | | Metal type | Brass | | Number Of Items | 100 | | Number of Pieces | 100 | | Outside Diameter | 4.6 Millimetres | | Set Name | Brass M3 Threaded Insert Set (100 Pieces) | | Size | 3mm x 5.7mm | | Thread Coverage | NO | | Thread Size | 3mm | | Thread Style | NO | | Thread Type | Machine Screw | | Thread size | 3mm | | Unit Count | 100.0 count | ## Product Details - **Brand:** Prasacco - **Colour:** Brown - **Exterior finish:** Brass - **Fastener type:** NO - **Finish type:** Brass - **Inside-thread size:** M3 - **Material:** Brass - **Metal type:** Brass - **Thread size:** 3mm - **Thread type:** Machine Screw ## Images ![Prasacco 100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Twill Thread Nut Inserts for Loptop Automotive Plastic Shells - Image 1](https://m.media-amazon.com/images/I/71u2u6etDGL.jpg) ![Prasacco 100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Twill Thread Nut Inserts for Loptop Automotive Plastic Shells - Image 2](https://m.media-amazon.com/images/I/714irAkAPOL.jpg) ![Prasacco 100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Twill Thread Nut Inserts for Loptop Automotive Plastic Shells - Image 3](https://m.media-amazon.com/images/I/81zTRPHMiqL.jpg) ![Prasacco 100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Twill Thread Nut Inserts for Loptop Automotive Plastic Shells - Image 4](https://m.media-amazon.com/images/I/81lgGl4vrKL.jpg) ![Prasacco 100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Twill Thread Nut Inserts for Loptop Automotive Plastic Shells - Image 5](https://m.media-amazon.com/images/I/719rCawd00L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ I Branded My Plastic Creations With Tiny Golden Crowns *by A***6 on 27 April 2026* I fired up my soldering iron to maximum heat. I held my fragile 3D printed part in my sweaty hands. I needed absolute structural strength. I picked up one of these brass-like cylinders with my precision tweezers. I'll absolutely melt my fingers off, I thought. I pressed the red-hot iron directly onto the metal. The insert sank beautifully into the yielding plastic wall. The pungent smell of melting polymer filled my basement. I inhaled the fumes deeply. They smelled exactly like victory. The plastic cooled quickly around the knurled metal, locking the piece in place forever. I drove a steel M3 screw into the fresh threads. It tightened down with immense, satisfying pressure. I've successfully transformed my flimsy plastic trinkets into indestructible industrial hardware. They're doing their job perfectly. You'll definitely want a massive pile of these inserts on your workbench. ### ⭐⭐⭐⭐⭐ An utter joy to use - transforms 3D printer projects *by R***W on 13 December 2023* I'm sure these have other uses but, for 3D printed projects, these transform how easy it is to construct boxes and cases. For the M3 nuts I set blocks of 10 mm cubed with a 4mm hole in them (6mm depth), placed a rivnut in the hole, put a soldering iron on top of the nut and then gently pushed down. The nut settles in with a very satisfying squelch and then it's an extremely strong anchor to screw other components, plates or faces onto. Love these and I'll be using them in all my medium-to-high complexity 3D projects from now on! Recommended. ### ⭐⭐⭐⭐⭐ Just what I needed *by T***R on 23 July 2024* Ordered these for a 3d printing project. They work a treat. Easy to insert using a soldering iron with a pointed tip in the middle. Takes a bit of practice to get them straight but that's the same for any brand of these. And they work just fine. Can't fault them - good value for a big bag full of inserts! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/516649649-prasacco-100-pcs-m3-threaded-insert-m3-heat-set-inserts](https://www.desertcart.at/products/516649649-prasacco-100-pcs-m3-threaded-insert-m3-heat-set-inserts) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-07-23*