Perfect for PCB repairs, appliance maintenance, and prototyping projects where permanent metal to bonding is essential accuracy machined internal thread and heat melt design create secure, shaking resistant connection for stable soldering operations with various iron tip Premium steel and brass heat insert nut erosion resistance and temperature durability, ensuring long service in demanding applications Ideal for electronics engineers, enthusiasts, and repair technicians requiring stable threaded fastening solution in delicate assembly work easy installation through thermal fusions eliminates need for adhesives, while standardized thread specifications secure compatibility with 3mm / 4mm screws, Manufacturer: RUINBNC