M4 Brass Threaded Inserts for 3D Printing Plastic Parts, Heat Set Insert Nuts 50pcs, Durable Metal Threading

M4 Brass Threaded Inserts for 3D Printing Plastic Parts, Heat Set Insert Nuts 50pcs, Durable Metal Threading Description

Product overview Brass insert nut designed for meltin embedding by heat or injection molding. Fluted body and threaded insert provide durable internal threads in plastic parts and 3D printed components. This listing is for M4 size, outer diameter 5 mm, length 9 mm, pack of 50 pieces. Key benefits Strong, reliable metal threads: Converts plastic connection points into durable M4 threaded fastenings to reduce wear and thread stripping. Secure retention in plastic: Fluted melt design improves mechanical grip after embedding for consistent pullout resistance. Easy integration into manufacturing and repairs: Suitable for heat insertion, meltin placement during injection molding, or thermal embedding into finished plastic parts. Broad compatibility: Works with standard M4 machine screws and bolts. Also available in a range of sizes to match different thread requirements. Important attributes Size and pack: M4 internal thread, outer diameter 5 mm, length 9 mm, 50 pieces per pack. Material: Brass copper alloy insert for reliable conductivity and corrosion resistance typical of brass inserts. Design: Fluted melt body with threaded bore for positive mechanical lock in plastic and 360 degree thread engagement for fastener strength. Function: Embedding insert nut used for heat insertion, melt embedding during injection molding, and post molding thermal installation. Available sizes M1, M1.4, M1.6, M1.7, M2, M2.5, M3, M4, M5, M6, M8 Practical applications Electronics enclosures and consumer devices: Add metal threads to plastic housings for repeated assembly and disassembly of panels and covers. 3D printed parts and prototypes: Embed inserts by heat to create reliable M4 mounting points without damaging printed material. Small machinery and plastic fixtures: Use during injection molding or postmold insertion to provide strong fastening points for mechanical assemblies. Installation tips For heat insertion, use a temperaturecontrolled soldering iron or insertion tool sized to the insert body to melt the surrounding plastic evenly. For molding process integration, position inserts in the mold so they are captured as the plastic solidifies; ensure correct orientation and depth for full thread engagement. Match screw length to the insert length to avoid bottoming out or overpenetration into the plastic. What this product solves Provides a consistent, metalthreaded fastening solution in soft or brittle plastic parts where direct screwing would strip threads or fail under repeated use. Facilitates stronger assemblies, simplifies repairs, and standardizes fastener compatibility. Contents of package 50 brass melt fluted thread insert nuts, M4 thread, OD 5 mm, length 9 mm.