DIN 65320-2015 航空航天系列.使用温度235℃以下公称抗拉强度1100MPa的钢制短螺纹长度MJ螺纹带内补偿十字形筋状传动结构的紧公差盘头螺栓
Aerospace series - Pan head bolts, close tolerance, with internal offset cruciform ribbed drive recess and short-length MJ thread, steel, nominal tensile strength 1 100 MPa, for temperatures up to 235 °C; Text in German and English