Self-tapping screw for special threads of automobile

The self-tapping screw for the special thread of the automobile comprises a head part and a rod body connected with the head part, the rod body is provided with a thread, and the thread angle alpha of the thread is 30-40 degrees. Therefore, the thread structure of the screw is tighter, and the sealing performance and the stability of the screw are improved. Compared with the prior art, the screw has the following beneficial effects that the requirement for tightening torque is low, the assembling difficulty and cost are reduced, the threaded structure of the screw is tighter, screw loosening is not prone to occurring in the using process, connection is firmer, the strength is higher, and breakage is not prone to occurring. 一种用于汽车特殊螺牙的自攻螺钉，包括头部和与头部连接的杆体，所述杆体上设置有螺纹，所述螺纹的牙型角α为30°~40°。使得螺钉的螺纹结构更加紧密，提高了螺钉的密封性和稳定性。与现有技术相比，本申请具有以下有益效果：拧紧力矩要求小，降低了装配难度和成本，螺钉的螺纹结构更加紧密，在使用过程中不容易滑牙，连接更加牢固，且强度更高，不容易断裂。