--- product_id: 600782778 title: "Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts" brand: "kadrick" price: "£20.81" currency: GBP in_stock: true reviews_count: 8 category: "Kadrick" url: https://www.desertcart.co.uk/products/600782778-kadrick-420pcs-m3-m4-m5-threaded-inserts-assortment-kit-3d store_origin: GB region: United Kingdom --- # Heat-insertable brass M3, M4, M5 metric sizes 420pcs versatile kit Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts **Brand:** kadrick **Price:** £20.81 **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your 3D prints with brass precision that sticks like a pro! ## Quick Answers - **What is this?** Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts by kadrick - **How much does it cost?** £20.81 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/600782778-kadrick-420pcs-m3-m4-m5-threaded-inserts-assortment-kit-3d) ## Best For - kadrick enthusiasts ## Why This Product - Trusted kadrick brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-in-One Precision Kit:** 420 premium brass inserts covering M3, M4, and M5 sizes for every 3D printing project. - • **Organized & User-Friendly:** Clearly labeled compartments in a sturdy case keep your workflow smooth and efficient. - • **Superior Grip & Durability:** Knurled design ensures maximum tensile strength and corrosion resistance for long-lasting assemblies. - • **Heat-Activated Installation:** Easily embed inserts into plastic parts using soldering iron or ultrasound—no special tools needed. - • **Trusted Brand with Warranty:** Kadrick’s rigorously tested inserts come with a 24-month warranty—confidence in every fastener. ## Overview The Kadrick 420Pcs Threaded Inserts Kit offers a comprehensive assortment of high-quality brass knurled inserts in M3, M4, and M5 sizes, designed specifically for seamless heat insertion into plastic 3D printed parts. Engineered for superior grip and corrosion resistance, this kit is organized for easy access and backed by a 24-month warranty, making it the go-to choice for professional-grade prototyping and production. ## Description Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts: desertcart.com: Industrial & Scientific Review: Good qaulity, nice selection, fair price. - I appreciate the nice selection of sizes and overall quality of these inserts. They work fine for my applications. Install easily using the Kadrick soldering iron tips. Since my application tends to be "one and done" use where the screw is seldom, if ever, removed, I can't comment on durability. I don't see any red flags that make me think these are less durable than any others that I have used. If I have one negative comment, it is that I would like the assortment to include more sizes of M4 and perhaps fewer M3. That said, this provides plenty of selection for prototyping parts and validating design and functionality. If I find that a different length insert in the prototyping stage, that is easy to resolve when I purchase larger quantities for production runs. Review: Excellent budget set would recommend - Great set of screw inserts for those who are on a budget. All inserts are machined well and screws thread very nicely into the insert. Would recommend to purchase. Set also has a nice variety of inserts as well. ## Features - Suitable for 3D printing: Brass threaded inserts, which can be embedded into plastic materials using the heat from a soldering iron or ultrasound, are the optimal solution for adding threads in 3D printing. - Common specifications: We have created this set of inserts using a large quantity of M3 inserts combined with M4 and M5 inserts, based on the most commonly used specifications by 3D printing enthusiasts. The heights range from 3mm to 12mm. We hope you will like it. - Secure fixation: Our brass threaded inserts are made of high-quality brass and undergo precision processing, ensuring excellent heat conduction and corrosion resistance. Through testing, we have found that compared to straight-threaded inserts, the knurled threaded inserts provide stronger gripping strength and can withstand high levels of tensile force. - Clear labeling: Each specification has its own independent compartment in the plastic box, and we have attached labels with detailed annotations for key data, making it convenient to use. - Brand guarantee: Kadrick specializes in the production and development of fasteners. Our products have undergone rigorous testing, so you can use them with confidence. Additionally, we provide a 24-month after-sales warranty service. If you have any questions, please feel free to contact us. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CPVCTXJ7 | | Best Sellers Rank | #1,638 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Nut Inserts | | Brand | Kadrick | | Color | yellow | | Compatible Groove Diameter | 3 Millimeters | | Customer Reviews | 4.8 4.8 out of 5 stars (245) | | Drive Style | Spline | | Exterior Finish | Brass | | Fastener Type | Insert | | Finish Types | Polished | | Grade Rating | commercial | | Inside Thread Size | M3, M4, M5 | | Item Dimensions | 2.7 x 5 x 0.9 inches | | Manufacturer | Kadrick | | Material Type | Brass | | Metal Type | Brass | | Number Of Items | 1 | | Number of Pieces | 420 | | Part Number | 047-HIK-M3-M5-420 | | Screw Head Style | Round | | Size Name | Kit M3-M5 420Pcs | | Thread Class | Class 2B | | Thread Coverage | Fully Threaded | | Thread Size | M3 M4 M5 | | Thread Style | Right Hand | | Thread Type | Straight | ## Product Details - **Color:** yellow - **Exterior Finish:** Brass - **Fastener Type:** Insert - **Material:** Brass - **Thread Size:** M3 M4 M5 ## Images ![Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts - Image 1](https://m.media-amazon.com/images/I/81U+UVv0VmL.jpg) ![Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts - Image 2](https://m.media-amazon.com/images/I/71CTryyVKCL.jpg) ![Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts - Image 3](https://m.media-amazon.com/images/I/718RqOPqGgL.jpg) ![Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts - Image 4](https://m.media-amazon.com/images/I/711W9BfRdDL.jpg) ![Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts - Image 5](https://m.media-amazon.com/images/I/716JYaQosXL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good qaulity, nice selection, fair price. *by E***N on January 26, 2026* I appreciate the nice selection of sizes and overall quality of these inserts. They work fine for my applications. Install easily using the Kadrick soldering iron tips. Since my application tends to be "one and done" use where the screw is seldom, if ever, removed, I can't comment on durability. I don't see any red flags that make me think these are less durable than any others that I have used. If I have one negative comment, it is that I would like the assortment to include more sizes of M4 and perhaps fewer M3. That said, this provides plenty of selection for prototyping parts and validating design and functionality. If I find that a different length insert in the prototyping stage, that is easy to resolve when I purchase larger quantities for production runs. ### ⭐⭐⭐⭐⭐ Excellent budget set would recommend *by S***A on February 27, 2026* Great set of screw inserts for those who are on a budget. All inserts are machined well and screws thread very nicely into the insert. Would recommend to purchase. Set also has a nice variety of inserts as well. ### ⭐⭐⭐⭐⭐ Outstanding quality, consistent dimensions *by C***I on March 16, 2026* High quality, consistent and accurate dimensions. ## Frequently Bought Together - Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts - Kadrick Metric Screws Assortment - 2240 Pcs M3 Nuts Washers Kit, M3x4MM-35MM, Hex Socket Button & Cap Head Machine Bolts, 12.9 & 10.9 Grade Alloy Steel, Black for 3D Printing - Heat Set Insert Tool,Tips for Threaded inserts M2 M2.5 M3 M4 M5 M6, Soldering Iron Tips for 3D Printer Users,Compatible with 900M/T18/FX-888D Irons- Press Tool for Plastic 3D Printer Components --- ## 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.co.uk/products/600782778-kadrick-420pcs-m3-m4-m5-threaded-inserts-assortment-kit-3d](https://www.desertcart.co.uk/products/600782778-kadrick-420pcs-m3-m4-m5-threaded-inserts-assortment-kit-3d) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-23*