--- product_id: 214211472 title: "ruthex threaded Insert M3 (100 pieces) - RX-M3x5.7- brass threaded sockets - press-fit nut for plastic parts - by heat or ultrasound in 3D printer parts" price: "€ 69.87" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.be/products/214211472-ruthex-threaded-insert-m3-100-pieces-rx-m3x5-7-brass store_origin: BE region: Belgium --- # Heat & ultrasound press-fit M3 internal thread precision 100-piece bulk set ruthex threaded Insert M3 (100 pieces) - RX-M3x5.7- brass threaded sockets - press-fit nut for plastic parts - by heat or ultrasound in 3D printer parts **Price:** € 69.87 **Availability:** ✅ In Stock ## Summary > 🔧 Secure your 3D prints with precision – because every thread counts! ## Quick Answers - **What is this?** ruthex threaded Insert M3 (100 pieces) - RX-M3x5.7- brass threaded sockets - press-fit nut for plastic parts - by heat or ultrasound in 3D printer parts - **How much does it cost?** € 69.87 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/214211472-ruthex-threaded-insert-m3-100-pieces-rx-m3x5-7-brass) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Premium Brass Build:** Crafted from high-grade brass ensuring corrosion resistance and excellent thermal conductivity for long-term reliability. - • **Bulk Pack Convenience:** 100 threaded inserts per set to keep your workflow uninterrupted and your projects on point. - • **Unmatched Grip & Torque:** Opposite spiral knurled design delivers superior tightening and pull-out resistance for lasting durability. - • **Tailored for 3D Printing:** Specifically engineered for seamless embedding in 3D printed parts from top brands like Anycubic, Creality, and Prusa. - • **Versatile Plastic Compatibility:** Optimized for thermoplastics including PLA, PETG, ABS, PPS, and PP, making it perfect for diverse DIY projects. ## Overview The ruthex Threaded Insert M3 (100 pieces) set features high-quality brass knurled press-fit nuts designed for easy heat or ultrasound embedding into thermoplastic 3D printed parts. Engineered for superior grip and durability, these inserts provide reliable M3 internal threading compatible with popular 3D printers, making them an essential upgrade for professional-grade plastic assemblies. ## Description Product Description Tools required A soldering iron is required to insert the ruthex thread inserts. The perfect temperature of the soldering iron is the hot end temperature of the 3D printing filament. 1. Prepare The first step is to insert the ruthex thread insert into the hole in the component. The threaded insert guide of the brass insert helps. 2. Heat and insert Now the soldering iron can heat the thread insert without pushing the insert out of the hole. After heating, the threaded insert is pressed into the component. 3. Cool down The final step is cooling. This gives the plastic its final hardness again and the screw can now be tightened. Share your projects with us and the "3D printing community" on the social media platforms Youtube Check out "cnc kitchen" on Youtube to see the thread inserts in action. In the video, a comparison video with a tensile test is uploaded over different thread inserts. Instagram posts Share your projects with the 3D community on Instagram too. Please mark us in your post. You are sure of our like! Instagram-Story We are happy to share the stories of our users on our Instagram account official_ruthex. Thank you so much for sharing! Review: Great for 3D printed enclosures - I use these in every single 3D printed enclosure I design and they are perfect. Just finished off a bag of M3's and I've ordered some M4 and M5 Review: Inserts, for inserting... - Perfectly as described. ## Technical Specifications | Specification | Value | |---------------|-------| | Colour | yellow | | Exterior finish | Brass | | Fastener type | Knurled | | Material | Brass | | Metal type | Brass | | Thread size | M 3 | ## Product Details - **Brand:** ruthex - **Colour:** yellow - **Exterior finish:** Brass - **Fastener type:** Knurled - **Finish type:** Brass - **Item dimensions L x W x H:** 12 x 9 x 1 centimetres - **Material:** Brass - **Metal type:** Brass - **Thread size:** M 3 - **Thread type:** ISO Metric ## Images ![ruthex threaded Insert M3 (100 pieces) - RX-M3x5.7- brass threaded sockets - press-fit nut for plastic parts - by heat or ultrasound in 3D printer parts - Image 1](https://m.media-amazon.com/images/I/717sikDXLoL.jpg) ![ruthex threaded Insert M3 (100 pieces) - RX-M3x5.7- brass threaded sockets - press-fit nut for plastic parts - by heat or ultrasound in 3D printer parts - Image 2](https://m.media-amazon.com/images/I/81pKWAOJdoL.jpg) ![ruthex threaded Insert M3 (100 pieces) - RX-M3x5.7- brass threaded sockets - press-fit nut for plastic parts - by heat or ultrasound in 3D printer parts - Image 3](https://m.media-amazon.com/images/I/717LH8yMKsL.jpg) ![ruthex threaded Insert M3 (100 pieces) - RX-M3x5.7- brass threaded sockets - press-fit nut for plastic parts - by heat or ultrasound in 3D printer parts - Image 4](https://m.media-amazon.com/images/I/71od3QUANkL.jpg) ![ruthex threaded Insert M3 (100 pieces) - RX-M3x5.7- brass threaded sockets - press-fit nut for plastic parts - by heat or ultrasound in 3D printer parts - Image 5](https://m.media-amazon.com/images/I/71ntgYcJImL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for 3D printed enclosures *by S***E on 11 July 2020* I use these in every single 3D printed enclosure I design and they are perfect. Just finished off a bag of M3's and I've ordered some M4 and M5 ### ⭐⭐⭐⭐⭐ Inserts, for inserting... *by D***S on 30 September 2020* Perfectly as described. ### ⭐⭐⭐⭐⭐ Never used these before absolutely great easy and works very well *by M***N on 15 October 2020* liked every thing about them, first time used them no issues easy worked well and will definitely now use 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? - 🛒 **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.be/products/214211472-ruthex-threaded-insert-m3-100-pieces-rx-m3x5-7-brass](https://www.desertcart.be/products/214211472-ruthex-threaded-insert-m3-100-pieces-rx-m3x5-7-brass) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-06-14*