--- product_id: 494677929 title: "ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for P..." brand: "ruthex" price: "HK$133" currency: HKD in_stock: true reviews_count: 13 category: "Ruthex" url: https://www.desertcart.hk/products/494677929-ruthex-m3-threaded-inserts-100-pieces-rx-m3x5-7-brass store_origin: HK region: Hong Kong --- # 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 P... **Brand:** ruthex **Price:** HK$133 **Availability:** āœ… In Stock ## Summary > šŸ”§ Upgrade your 3D prints with threaded precision and lasting strength! ## Quick Answers - **What is this?** ruthex M3 Threaded Inserts - 100 Pieces RX-M3x5.7 Brass Heat Set Insert for P... by ruthex - **How much does it cost?** HK$133 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/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 - ā€¢ **Bulk Pack of 100 Inserts:** Stay stocked and ready for any project with a high-value, industrial-grade set. - ā€¢ **Precision M3 Threaded Fit:** Perfectly sized for seamless integration with your 3D printed parts. - ā€¢ **Superior Brass Durability:** Corrosion-resistant brass ensures long-lasting, reusable threaded connections. - ā€¢ **Heat & Ultrasonic Installation:** Effortlessly embed inserts using soldering iron or ultrasonic tools for a professional finish. - ā€¢ **Universal Thermoplastic Compatibility:** Engineered to anchor firmly in PLA, PETG, ABS, and more for versatile applications. ## Overview The ruthex M3 Threaded Inserts set includes 100 high-quality brass knurled nuts designed for heat or ultrasonic embedding into thermoplastic 3D printed parts. Featuring M3 internal threads and a 5.7mm length, these inserts provide corrosion resistance, strong hold, and easy installation, making them ideal for professional-grade 3D printing projects and repairs. ## Description Product description Review: High-Quality Heat Inserts - Overall, Iā€™m very happy with these heat inserts. They shipped quickly and arrived in good condition with no issues. In use, the machining appears to be high quality and the knurling is clean and consistent. Screws thread in smoothly without binding or cross-threading. I primarily use these for 3D printed parts and have not experienced any fitment or durability problems. They perform exactly as expected and I would recommend them to anyone installing threaded inserts in 3D prints. Review: Great product - Sizing was spot on for Sherpa heavy build. Easy to use and strong hold. ## 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 | #1,012 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Nut Inserts | | Brand | ruthex | | Color | Metric Threaded Insert | | Compatible Groove Diameter | 3.5 Millimeters | | Customer Reviews | 4.8 out of 5 stars 4,182 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 | | 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 P... - 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 P... - 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 P... - 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 P... - 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 P... - Image 5](https://m.media-amazon.com/images/I/71ntgYcJImL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ā­ā­ā­ā­ā­ High-Quality Heat Inserts *by M***S on February 14, 2026* Overall, Iā€™m very happy with these heat inserts. They shipped quickly and arrived in good condition with no issues. In use, the machining appears to be high quality and the knurling is clean and consistent. Screws thread in smoothly without binding or cross-threading. I primarily use these for 3D printed parts and have not experienced any fitment or durability problems. They perform exactly as expected and I would recommend them to anyone installing threaded inserts in 3D prints. ### ā­ā­ā­ā­ā­ Great product *by M***N on March 20, 2026* Sizing was spot on for Sherpa heavy build. Easy to use and strong hold. ### ā­ā­ā­ā­ā­ Ken *by K***N on April 16, 2026* These inserts worked great for my 3d print they fit perfectly and were very easy to install and definitely hold strong I used these inserts on petg filament I have put it to the test and so far they haven't gave out just try not to over torque them .. ## 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? - šŸ›’ **Trusted by 1.3+ Million Shoppers** ā€” Serving international shoppers since 2016 - šŸŒ **Shop Globally** ā€” Access 737+ million products across 21 categories - šŸ’° **No Hidden Fees** ā€” All customs, duties, and taxes included in the price - šŸ”„ **15-Day Free Returns** ā€” Hassle-free returns (30 days for PRO members) - šŸ”’ **Secure Payments** ā€” Trusted payment options with buyer protection - ā­ **TrustPilot Rated 4.5/5** ā€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hk/products/494677929-ruthex-m3-threaded-inserts-100-pieces-rx-m3x5-7-brass](https://www.desertcart.hk/products/494677929-ruthex-m3-threaded-inserts-100-pieces-rx-m3x5-7-brass) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-05-12*