DIN 65319:1987
航空航天.公称抗拉强度1100MPa使用温度为425℃以下的耐腐蚀钢制短长度MJ螺纹的带有筋状翼形的扭矩调节十字槽头紧公差盘头螺栓
Aerospace; pan head bolts, close tolerance, with ribbed TORQ-SET (ACR) recess and short-length MJ thread, corrosion-resisting steel; nominal tensile strength 1100 MPa, for temperatures up to 425 °C