--- product_id: 662248766 title: "1/4'' Threaded Inserts,1/4-20 Heat Set Insert,22 Pieces 1/4 20x12.7x8 Knurled Nuts,Brass Threaded Inserts for Plastic and 3D Printing Components" brand: "zwmssll" price: "€ 12.93" currency: EUR in_stock: true reviews_count: 10 category: "Zwmssll" url: https://www.desertcart.ie/products/662248766-1-4-threaded-inserts-1-4-20-heat-set-insert store_origin: IE region: Ireland --- # Heat Resistant >300°C 22 Knurled Brass Inserts 1/4-20 UNC Thread Size 1/4'' Threaded Inserts,1/4-20 Heat Set Insert,22 Pieces 1/4 20x12.7x8 Knurled Nuts,Brass Threaded Inserts for Plastic and 3D Printing Components **Brand:** zwmssll **Price:** € 12.93 **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your 3D prints with brass precision and heat-proof power! ## Quick Answers - **What is this?** 1/4'' Threaded Inserts,1/4-20 Heat Set Insert,22 Pieces 1/4 20x12.7x8 Knurled Nuts,Brass Threaded Inserts for Plastic and 3D Printing Components by zwmssll - **How much does it cost?** € 12.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/662248766-1-4-threaded-inserts-1-4-20-heat-set-insert) ## Best For - zwmssll enthusiasts ## Why This Product - Trusted zwmssll brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Enhanced Torque Grip:** 46° knurled design ensures superior fastening strength and no thread slippage. - • **Premium Brass Durability:** Corrosion-resistant and built to withstand extreme thermal stress. - • **Organized & Ready-to-Use Kit:** 22 individually labeled inserts in durable packaging for quick access and storage. - • **Precision Heat-Set Installation:** Easily embed with a soldering iron for flawless 3D print integration. - • **Universal Thermoplastic Compatibility:** Perfect for PLA, PETG, ABS, and more—versatility that fits every project. ## Overview This set of 22 brass 1/4-20 heat-set threaded inserts offers professional-grade durability and thermal resistance above 300°C, designed specifically for seamless integration into 3D printed and thermoplastic components. Featuring precision knurling for enhanced torque resistance and easy installation with common tools, these inserts deliver reliable, reusable fastening solutions across a wide range of plastics including PLA, PETG, and ABS. ## Description Zwmssll 1/4'' Threaded Inserts,1/4-20 Heat Set Insert,22 Pieces 1/4 20x12.7x8 Knurled Nuts,Brass Threaded Inserts for Plastic and 3D Printing Components: desertcart.com: Industrial & Scientific Review: Useful set of inserts - Excellent set of inserts. They work well, easy to install. Review: Good - Work as intended. Inserted into 3D printed PETG, 7.4mm hole seemed to do the trick. ## Features - 【1/4 Thread Inserts For Your 3D Printed Parts】- The ZWMSSLL threaded insert are lead free,22 pieces 1/4 -20x12.7x8mm Insert nuts.Different sizes of threaded inserts are individually packaged in thickened PE bags,Corresponding labels for the threaded inserts help you quickly find the desired type,Convenient use and storage，significantly boosting your work efficiency. - 【High-Quality Threaded Inserts】- Crafted from top-tier brass materials, these threaded inserts boast outstanding thermal conductivity, corrosion resistance, and durability. They exhibit remarkable resistance against breakage and deformation. Withstanding temperatures exceeding 300°C / 573°F, they easily endure the harsh heat generated during plastic thermal shaping processes. - 【Precision Craftsmanship】- The 46-degree angled knurling significantly enhances torque resistance and tensile strength, ensuring a stronger fastening. High-precision and clear threading ensures stability and reliability, preventing thread slippage during rotation. The embedded nuts feature guiding elements, eliminating the need for countersinking or recessing, making your work more convenient and efficient. - 【Easy to Use】- With a common soldering iron, you can easily place them into a blind or through hole of 3D prints.Brass threaded inserts can be installed into components of a 4D printer through heating or ultrasonic methods, or molded during the injection process. They are also suitable for circuit board assembly and the electronics field. The reusability of the insert nut is also possible by carefully removing them from the pressure part when they are no longer needed. - 【Wide Application】 - These inserts are designed for use with all thermoplastics, including materials like PLA, PETG, ABS, PPS, PP, and others. Whether installing them in 4D printed objects, injection-molded plastic parts, automotive plastic casings, or laptop shells, these inserts offer reliable and durable solutions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D3KW9XW5 | | Best Sellers Rank | #18,290 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #28 in Nut Inserts | | Brand | ZWMSSLL | | Color | UNC Threaded Insert | | Compatible Groove Diameter | 0.12 Inches | | Customer Reviews | 4.6 out of 5 stars 130 Reviews | | Drive Style | Spline | | Exterior Finish | Brass | | Fastener Type | Insert | | Grade Rating | industrial | | Inside Thread Size | 1/4 inch | | Item Diameter | 0.25 Inches | | Item Dimensions | 0.31 x 0.31 x 12.7 inches | | Item Weight | 0.02 Ounces | | Manufacturer | ZWMSSLL | | Material | Brass | | Material Type | Brass | | Metal Type | Brass | | Model | 1/4-20x12.7x8 Threaded Inserts | | Number Of Items | 22 | | Number of Pieces | 22 | | Outside Diameter | 7.15 Inches | | Part Number | 425Pcs Metric Knurled Nuts Kit | | Screw Head Style | Square | | Size Name | 1/4''-20 (22pcs) | | Thread Class | Class 2A | | Thread Coverage | Fully Threaded | | Thread Size | 1/4"-20 | | Thread Style | Right Hand | | Thread Type | Unified National Coarse (Unc) | ## Images ![1/4'' Threaded Inserts,1/4-20 Heat Set Insert,22 Pieces 1/4 20x12.7x8 Knurled Nuts,Brass Threaded Inserts for Plastic and 3D Printing Components - Image 1](https://m.media-amazon.com/images/I/719mVAwPKQL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Useful set of inserts *by E***R on April 28, 2026* Excellent set of inserts. They work well, easy to install. ### ⭐⭐⭐⭐⭐ Good *by A***A on October 27, 2025* Work as intended. Inserted into 3D printed PETG, 7.4mm hole seemed to do the trick. ### ⭐⭐⭐⭐⭐ They just work! *by B***3 on October 21, 2025* Not only do they work great, but they’re fun to install! As advertised, they melt into your plastic part and create a strong bond. Such a great little device! --- ## 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.ie/products/662248766-1-4-threaded-inserts-1-4-20-heat-set-insert](https://www.desertcart.ie/products/662248766-1-4-threaded-inserts-1-4-20-heat-set-insert) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-07-01*