【HARD AND THICK】The thread has a fixing function, meets the requirements of national standards, and the thread is neat. 【OUTLET THREAD】The thread of the copper nut is clearly visible, its exquisite workmanship and visible quality. 【MULTI-APPLICATIONS】Threaded inserts are widely used for injection molding and fastening and can be installed in tapered holes by ultrasonic or heating or when injection molding. 【FOR DIFFERENT NEEDS】The copper nut screw is small in size, light in weight, easy to use, and contains multiple plug-ins of different lengths to meet different needs. 【DURABLE】These brass inserts with good thermal conductivity and heat resistance for long term use.