Pneumatic fastener

The utility model provides a pneumatic fastener. The pneumatic fastener comprises a rivet core and a plug connector, the rivet core comprises an expansion head, a first core rod, a fracture groove and a second core rod which are sequentially arranged from top to bottom, a cavity is formed in the middle of the first core rod, and the plug connector is inserted into the cavity to fix the first core rod relative to the rivet body; according to the utility model, the plug connector is inserted into the cavity of the first core rod, so that the first core rod can be fixed relative to the rivet body through the plug connector, and the purpose of replacing a structural rivet is achieved. 本实用新型提供一种气动紧固件，包括钉芯和插接件；所述钉芯包括从上到下依次设置的膨胀头、第一芯杆、断裂槽和第二芯杆，所述第一芯杆的中部设有空腔，所述插接件插入所述空腔将所述第一芯杆相对铆体固定；本实用新型通过设置插接件插入第一芯杆的空腔内，从而能够通过插接件将第一芯杆相对铆体固定，达到替代结构型铆钉的目的。