These M3 thread heat molding double twill injection embedment nuts are designed for precise and reliable installation in 3D printing and injection molding applications. Each nut features a knurled outer surface that enhances grip and pull-out resistance when embedded into thermoplastic materials. The brass construction provides excellent heat resistance and mechanical strength, ensuring long-term durability under repeated use. With a smooth, burr-free thread profile, these nuts allow for easy screw insertion and consistent torque performance. Ideal for creating strong, reusable threaded holes in plastic parts, this 10-piece set offers a practical solution for prototyping and production projects.