The invention relates to an aviation fastener. The aviation fastener comprises a bolt and a nut which are matched with each other, wherein the bolt comprises a titanium alloy bolt base body, an anodicoxidation layer and a molybdenum disulfide coating, wherein the anodic oxidation layer and the molybdenum disulfide coating are sequentially arranged on the titanium alloy bolt base body from insideto outside, and the nut comprises a stainless steel nut base body, a nickel coating, a copper coating and a molybdenum disulfide coating, wherein the nickel coating, the copper coating and the molybdenum disulfide coating are sequentially arranged on the stainless steel nut base body from inside to outside. According to the aviation fastener, for a titanium alloy bolt and a stainless steel nut, different coating structures are arranged, the lubricating effect of a thread pair is effectively improved on the basis of guaranteeing the hardness and abrasive resistance of the surface layer of the fastener, the possibility of stagnation and difficulty during thread screwing is effectively reduced, and the reliability of installation and maintenance of the fastener is improved.