{"product_id":"100pcs-m4-brass-knurl-nut-copper-inserts-embedded-fasteners","title":"100pcs M4 Brass Knurl Nut Copper Inserts Embedded Fasteners","description":"\n\u003ch2\u003e100pcs M4×4×5 Brass Double-Pass Knurl Nut Copper Insert Embedded Fasteners\u003c\/h2\u003e\n\u003cp\u003eUpgrade your metalworking, woodworking, and 3D-printing projects with these professional-grade \u003cstrong\u003eM4×4×5 Brass Knurl Nut Copper Inserts\u003c\/strong\u003e. Designed for heat-set or press-fit embedding into plastic, wood, and composite materials, these threaded inserts deliver rock-solid, reliable thread engagement wherever a standard machine screw thread is needed.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose These Brass Knurl Nut Inserts?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Copper\/Brass Material:\u003c\/strong\u003e Resists corrosion and provides excellent conductivity and durability for long-lasting performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDouble-Pass Knurled Body:\u003c\/strong\u003e The aggressive knurl pattern bites firmly into host materials, preventing spin-out and pull-out under load.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM4 Thread Size (4mm × 4mm × 5mm):\u003c\/strong\u003e Standard M4 internal thread accommodates a wide range of M4 machine screws and bolts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Application:\u003c\/strong\u003e Ideal for 3D-printed parts, injection-molded plastics, PCB assemblies, wood projects, and DIY metalworking fabrications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack of 100:\u003c\/strong\u003e Generous quantity keeps your workshop stocked for multiple projects without frequent reordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Compatible with heat-set soldering iron tips, press-fit tools, or ultrasonic insertion equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCopper \/ Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsert Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble-Pass Knurl Embedded Fastener\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFDM \/ SLA 3D-printed enclosures and brackets\u003c\/li\u003e\n  \u003cli\u003eInjection-molded plastic assemblies\u003c\/li\u003e\n  \u003cli\u003eElectronics and PCB mounting\u003c\/li\u003e\n  \u003cli\u003eFurniture and cabinetry joinery\u003c\/li\u003e\n  \u003cli\u003eRC models, drones, and robotics frames\u003c\/li\u003e\n  \u003cli\u003eDIY metalworking and fabrication projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1\"\u003e10pcs Durable Gold Blade Nut Metal Universal Trimmer Accessories Anti-Loosening\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-2-pin-quick-splice-spring-wire-connectors-lock-terminals\"\u003e10pcs 2-Pin Spring Wire Connectors – Quick Splice Lock Terminals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What materials can M4×4×5 brass knurl nut inserts be embedded into?\u003c\/h4\u003e\n\u003cp\u003eA: These brass copper inserts are designed for embedding into thermoplastics (such as PLA, ABS, PETG, Nylon), wood, and other composite materials. They are most commonly used in 3D-printed parts but also work well in injection-molded plastics and woodworking applications using a press-fit or heat-set method.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I install these brass threaded inserts?\u003c\/h4\u003e\n\u003cp\u003eA: Installation is straightforward. For thermoplastics, use a soldering iron fitted with a heat-set tip to gently press the insert flush into a pre-drilled hole slightly smaller than the outer diameter. For wood or harder materials, a press-fit tool or vice can be used. The double-pass knurl pattern ensures a secure grip once installed.\u003c\/p\u003e\n\u003ch4\u003eQ: What screw size is compatible with these M4 inserts?\u003c\/h4\u003e\n\u003cp\u003eA: These inserts feature a standard M4 internal thread, making them compatible with any M4 machine screw or bolt. Ensure the screw length does not exceed the insert depth (4mm) unless the host material provides additional clearance.\u003c\/p\u003e\n\u003ch4\u003eQ: Are 100 pieces enough for a typical project?\u003c\/h4\u003e\n\u003cp\u003eA: For most hobbyist or small-scale fabrication projects, 100 pieces provides ample supply. The bulk quantity is especially convenient for 3D printing enthusiasts, electronics assemblers, or workshop professionals who use M4 threaded inserts frequently across multiple builds.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What materials can M4×4×5 brass knurl nut inserts be embedded into?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These brass copper inserts are designed for embedding into thermoplastics (such as PLA, ABS, PETG, Nylon), wood, and other composite materials. 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