FC type optical fiber connector parts

The utility model discloses a FC type optical fiber connector parts, including preceding sleeve, shell, lock pin, spring, back sleeve, snap ring and tail cover, the shell suit is on preceding sleeve, and preceding telescopic front end stretches out the shell, in the sleeve, the front end of lock pin stretched out preceding sleeve before the lock pin was located, and the rear end crimping of lock pin has the lock pin caudal peduncle, the spring housing is located on the lock pin caudal peduncle, the telescopic front end in back is connected in preceding telescopic rear end, the tail ways is located on the sleeve of back, back telescopic rear portion outer wall is by preceding annular arch and the external screw thread that is used for increase and snap ring to be connected frictional force that have respectively after to, the snap ring is cylinder socket joint circular cone tubular structure, the snap ring crimping in the back the telescopic rear portion that has annular arch and external screw thread. The uti