--- product_id: 452508873 title: "uxcell knurled Insert Nuts, 60Pcs M3 x 4mm L x 5mm OD 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut" brand: "uxcell" price: "85 zł" currency: PLN in_stock: true reviews_count: 5 category: "Uxcell" url: https://www.desertcart.pl/products/452508873-uxcell-knurled-insert-nuts-60pcs-m3-x-4mm-l-x store_origin: PL region: Poland --- # Heat-set installation, no countersink needed M3 x 0.5mm pitch precision Brass for durability & corrosion resistance uxcell knurled Insert Nuts, 60Pcs M3 x 4mm L x 5mm OD 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut **Brand:** uxcell **Price:** 85 zł **Availability:** ✅ In Stock ## Summary > ⚙️ Upgrade your 3D prints with brass precision and lasting grip! ## Quick Answers - **What is this?** uxcell knurled Insert Nuts, 60Pcs M3 x 4mm L x 5mm OD 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut by uxcell - **How much does it cost?** 85 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/452508873-uxcell-knurled-insert-nuts-60pcs-m3-x-4mm-l-x) ## Best For - uxcell enthusiasts ## Why This Product - Trusted uxcell brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bulk Ready:** 60-piece pack to keep your projects running without interruption - • **Built to Last:** Premium brass construction resists corrosion and heat for long-term reliability - • **Secure Hold, No Slip:** Embossed outer diameter creates friction lock preventing loosening - • **Effortless Integration:** Heat or ultrasonic embedment for seamless 3D printing and injection molding - • **Precision Fit, Zero Hassle:** Knurled design ensures firm grip without countersinking ## Overview The uxcell Knurled Insert Nuts are M3 x 4mm brass threaded inserts designed for heat or ultrasonic embedding into plastic matrices. Featuring a knurled, embossed outer surface, they provide superior friction and torsion resistance without the need for countersinking. Ideal for 3D printing and injection molding applications, this 60-piece set offers durable, corrosion-resistant fastening with easy installation. ## Description Descriptions:Made of brass material, high hardness and durable. Provides good mechanical properties with increased corrosion and heat resistanceThe knurled insert nut has a guide, so no countersink is required. The surface is smooth, firm and even, and easy to install.It can be installed into a plastic matrix by ultrasound or heat during the injection molding process.Can be widely used in 3D printing injection molding to achieve tight fixation.Because the outer diameter of the insert is embossed, it forms certain friction and bites force with the brass insert after molding, which can be fixed on the inside and will not fall off. Has a certain torsion and tension.Product Specifications:Material: BrassColor: Gold ToneThread Size: M3 Pitch: 0.5mmOverall Size: 5mm x 4mm / 0.2" x 0.16"(OD*L)Package Content:60 Pcs x Knurled Insert Nuts Review: Great for 3D printing. Review: Good inserts ## Features - [SIZE] - Thread Dia: M3; Pitch: 0.5mm; Overall Size: 5mm x 4mm / 0.20" x 0.16"(OD*L) - [MATERIAL] - Made of brass material, high hardness and durable. Provides good mechanical properties with increased corrosion and heat resistance - [FEATURE] - The embedding nut has a guide so there is no need for a counterbore or countersink. Smooth surface, firm and uniform, easy to install. - [ADVANTAGE] - Due to the embossing process on the outer diameter of the insert, it forms certain friction and bites force with the brass insert after forming, which can be fixed on the inside so that it will not fall off easily. Has a certain torsion and tension. - [APPLICATION] - Can be installed by ultrasonic or heat into the plastic matrix, or formed during the injection, widely used in 3D printing injection molding to achieve tight fixation. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09MCW7ZN5 | | Best Sellers Rank | #921,003 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #639 in Hand Sewing Needles | | Brand | uxcell | | Colour | gold | | Compatible Groove Diameter | 5 Millimeters | | Customer Reviews | 4.8 out of 5 stars 141 Reviews | | Drive Style | Spline | | Exterior Finish | Brass | | Fastener Type | Knurled | | Finish Types | Brass | | Inside Thread Size | M3 | | Item Diameter | 5 Millimetres | | Item Dimensions | 14 x 10 x 1 Centimeters | | Manufacturer | uxcell | | Material | Brass , Plastic | | Material Type | Brass, Plastic | | Metal Type | Brass | | Model | a21073000ux0151 | | Number of Pieces | 60 | | Part Number | a21073000ux0151 | | Screw Head Style | Flat | | Size Name | M3x4x5mm | | Thread Class | Coarse | | Thread Coverage | Fully Threaded | | Thread Size | M3 | | Thread Style | Right Hand | | Thread Type | Unified National Coarse | ## Product Details - **Color:** Gold Tone - **Exterior Finish:** Brass - **Fastener Type:** Insert, Knurled - **Material:** Brass - **Thread Size:** m3-0.5 ## Images ![uxcell knurled Insert Nuts, 60Pcs M3 x 4mm L x 5mm OD 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut - Image 1](https://m.media-amazon.com/images/I/71IJIiwYY4L.jpg) ![uxcell knurled Insert Nuts, 60Pcs M3 x 4mm L x 5mm OD 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut - Image 2](https://m.media-amazon.com/images/I/61uh5zhhoML.jpg) ![uxcell knurled Insert Nuts, 60Pcs M3 x 4mm L x 5mm OD 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut - Image 3](https://m.media-amazon.com/images/I/61lwtb2a3SL.jpg) ![uxcell knurled Insert Nuts, 60Pcs M3 x 4mm L x 5mm OD 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut - Image 4](https://m.media-amazon.com/images/I/61p8QGkDABL.jpg) ![uxcell knurled Insert Nuts, 60Pcs M3 x 4mm L x 5mm OD 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut - Image 5](https://m.media-amazon.com/images/I/61t1FSickXL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for 3D printing. *by D***C on 3 March 2026* ### ⭐⭐⭐⭐⭐ Good inserts *by A***R on 18 July 2025* ### ⭐⭐⭐⭐⭐ Quality *by B***. on 21 November 2024* --- ## 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.pl/products/452508873-uxcell-knurled-insert-nuts-60pcs-m3-x-4mm-l-x](https://www.desertcart.pl/products/452508873-uxcell-knurled-insert-nuts-60pcs-m3-x-4mm-l-x) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-08*