The Industrial Brass Threaded Insert is threaded fasteners available in wide variety of sizes, materials, threads, finishing, types or styles. Threaded Inserts are also known as Insert Nuts. Brass Inserts can be installed using molded-in, ultrasonic or heat staking methods. Industrial Brass Threaded Insert has an internal thread and can be used as socket head or button head machine screw. A threaded plastic insert is a spiral ridge on the end of a pipe that enables pipes to be joined together.