Tallsocne's M3 threaded inserts are the perfect solution for securing 3D printed components or plastic parts. This pack includes 200 brass metric knurled nuts (M3x4x5 mm) designed for heat-setting into plastic materials. These inserts provide a durable, reusable threaded hole for fastening screws, eliminating the risk of stripped threads. Ideal for DIY projects, RC models, home repairs, and more. The knurled design ensures a secure grip within the plastic, while the brass construction offers excellent corrosion resistance. Upgrade your plastic parts with these reliable, long-lasting inserts from Tallsocne