--- product_id: 494677929 title: "ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components" brand: "ruthex" price: "Β£10.61" currency: GBP in_stock: true category: "Ruthex" url: https://www.desertcart.co.uk/products/494677929-ruthex-m3-threaded-inserts-100-pieces-rx-m3x5-7-brass store_origin: GB region: United Kingdom --- # Heat/ultrasonic embed tech 100 precision M3 inserts Durable corrosion-resistant brass ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components **Brand:** ruthex **Price:** Β£10.61 **Availability:** βœ… In Stock ## Summary > πŸ”§ Upgrade your 3D prints with pro-grade threaded inserts β€” because your creations deserve the best! ## Quick Answers - **What is this?** ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components by ruthex - **How much does it cost?** Β£10.61 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/494677929-ruthex-m3-threaded-inserts-100-pieces-rx-m3x5-7-brass) ## Best For - ruthex enthusiasts ## Why This Product - Trusted ruthex brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Premium brass inserts resist corrosion and heat, guaranteeing long-term reliability. - β€’ **Bulk Ready for Pros:** 100-piece set means you’re always stocked for your next project or prototype sprint. - β€’ **Unmatched Grip & Torque:** Spiral knurled design ensures rock-solid hold and smooth tightening/loosening every time. - β€’ **Seamless 3D Print Integration:** Effortlessly retrofit Anycubic, Prusa & more with heat or ultrasonic embedding. - β€’ **Universal Plastic Compatibility:** Perfectly anchors in PLA, PETG, ABS, and a wide range of thermoplastics. ## Overview The ruthex M3 Threaded Inserts set includes 100 brass heat-set inserts designed for seamless integration into 3D printed parts. Compatible with a variety of thermoplastics, these M3x5.7mm inserts use heat or ultrasonic embedding for a secure, corrosion-resistant hold. Ideal for professional makers and engineers seeking durable, reusable threaded solutions that enhance the strength and longevity of their 3D printed assemblies. ## Description ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components: desertcart.com: Tools & Home Improvement ## Features - M3 THREAD INSERTS FOR YOUR 3D PRINTED PARTS: The ruthex threaded nuts can be retrofitted by heat or ultrasound into parts of 3D printers from e.g. Anycubic or Prusa. With the help of heat from a soldering iron or ultrasonic, the insert nuts are simply embedded in a blind- or through hole - FIXED HOLD WITH EASY APPLICATION: Thanks to the geometry of the threaded sleeve, the threaded sleeve holds it firmly in the pressure part. The opposing spiral-shaped knurled nuts ensure a balanced high tightening and loosening torque, as well as a high tightening force. The guide has made insertion much easier - STABLE & LONG-LASTING THREAD INSERTS: The inserts with internal thread brass, which ensures optimum corrosion resistance and thermal conductivity. This means that each insert nut can be used for a long time and is easy to use. The reusability of the insert nut is also possible by carefully removing them from the pressure part when they are no longer needed - SUITABLE FOR A VARIETY OF PLASTICS: The inserts are designed for all thermoplastics. For example, the knurled nuts hold in PLA, PETG, ABS, PPS, PP and many more. As soon as the plastic of the part around the brass sleeve cools and hardens, the threaded sleeve is firmly anchored - PRACTICAL THREAD INSERT SET: The ruthex thread insert set are lead free RX-M3x5,7 consists of 100 insert nuts with M3 internal thread and a length of 5.7 mm. The threaded sleeves can be inserted by ultrasonic and heat embedding ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08BCRZZS3 | | Best Sellers Rank | #1,807 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Nut Inserts | | Brand | ruthex | | Color | Metric Threaded Insert | | Compatible Groove Diameter | 3.5 Millimeters | | Customer Reviews | 4.8 out of 5 stars 4,280 Reviews | | Drive Style | Spline | | Exterior Finish | Brass | | Fastener Type | Insert | | Finish Types | Brass | | Grade Rating | Industrial | | Inside Thread Size | M3 | | Item Diameter | 3 Millimeters | | Item Dimensions | 4.72 x 3.54 x 0.39 inches | | Manufacturer | ruthex | | Material | Brass | | Material Type | Brass | | Metal Type | Brass | | Model | GE-M3x57-001 | | Number Of Items | 100 | | Number of Pieces | 100 | | Part Number | GE-M3x57-001 | | Screw Head Style | Flat | | Set Name | ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 | | Size Name | M3x5.7 (100pcs) | | Thread Class | Class 2A | | Thread Coverage | Fully Threaded | | Thread Size | M3 | | Thread Style | Right Hand | | Thread Type | Straight | | Unit Count | 100.0 Count | ## Product Details - **Color:** Metric Threaded Insert - **Exterior Finish:** Brass - **Fastener Type:** Insert - **Material:** Brass - **Thread Size:** M3 ## Images ![ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components - Image 1](https://m.media-amazon.com/images/I/717sikDXLoL.jpg) ![ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components - Image 2](https://m.media-amazon.com/images/I/81pKWAOJdoL.jpg) ![ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components - Image 3](https://m.media-amazon.com/images/I/717LH8yMKsL.jpg) ![ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components - Image 4](https://m.media-amazon.com/images/I/71od3QUANkL.jpg) ![ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components - Image 5](https://m.media-amazon.com/images/I/71ntgYcJImL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Frequently Bought Together - ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components - ruthex 7x Soldering Tips/Heat-Set Insert Tips - for Thread Inserts M2 / M2.5 / M3 / M4 / M5 / M6 / M8 - #2-56 / #4-40 / #8-32/ #10-24 1/4" and Soldering Iron Adapter 900M / T18 - Kadrick Metric Screws Assortment,2240 Pcs M3 Screws Nuts Washers Assortment M3x4MM-35MM, Hex Socket Button & Cap Head M3 Machine Bolts Kit, 12.9 & 10.9 Grade Alloy Steel,Black Screws for 3D Printing --- ## 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.uk/products/494677929-ruthex-m3-threaded-inserts-100-pieces-rx-m3x5-7-brass](https://www.desertcart.co.uk/products/494677929-ruthex-m3-threaded-inserts-100-pieces-rx-m3x5-7-brass) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-05*