The knurled portion adds friction for extra grip when tightening, making installation simple and secure. These solid brass threaded insert nuts are ideal for injection molding applications, providing durable and reliable threads in plastic or soft materials. The blind hole design prevents debris from entering the thread, ensuring a clean fit. Available in multiple sizes from M3 to M10, each nut features a knurled outer surface for easy hand tightening and quick disassembly. for use in electronics, automotive, and general manufacturing where strong, reusable threads are required.