Insert nut

Copper nuts made of various embossed wire rods (generally lead brass, such as H59, 3604, 3602). The embedded knurled copper nuts we contact with everyday are processed by precision automatic lathe. The reference standard of embedded knurled copper nut is from the national standard GB/T809.
The main operation mode of the embedded knurled copper nut is injection molding. After heating, it is embedded into the plastic part or directly injected into the mold. If the mold is used for injection molding, the melting point of PA/NYLOY/PET is above 200 ° C. The temperature of the embedded nut is rapidly increased after it is hot melted into the plastic part. After injection molding, the plastic body is rapidly cooled and crystallized and hardened. If the temperature of the embedded nut is still at high temperature, Then it is possible to fall to the place where the copper nut contacts the plastic part and start to loosen or crack. Therefore, copper nuts instead of carbon steel nuts are used in the injection molding of embedded nuts.
There are two ways to form the external knurling of embedded copper nuts. One is to use copper raw materials to form the knurling and then produce it on the upper equipment. Generally, the knurling pattern of this way is straight, and the other is to use smooth copper materials to directly tap while embossing in the production process. This processing method can produce some non-standard knurled copper nuts. The shape of the embossing of embedded copper nuts can be selected by users, such as mesh All kinds of knurled patterns such as splay embossing and herringbone embossing.